Cashback Offer from 4th to 8th May 2021. Get Flat 20% Cashback credited to your account for a minimum transaction of $80. Post Your Question Today!

Question DetailsNormal
$ 8.00

MATH 225N Week 4 Quiz and Answers (Spring Term) REVISED VERSION WITH CORRECT ANSWERS (2020/2021)

Question posted by
Online Tutor Profile
request

Brayden tosses a coin 500 Of those 500times, he observes heads a total of 416 times. Calculations show that the probability of this occurring by chance is less than 0.01, assuming the coin is fair. Determine the meaning of the significance level.

2. Question: Suppose X∼N(11,0.5), and x=12. Find and interpret the z-score of the standardized normal random variable.

3. Question: A normal distribution is observed from the times to complete an obstacle course. The mean is 69seconds and the standard deviation is 6 Using the  Empirical Rule, what is the probability that a randomly selected finishing time is greater than 87 seconds?……. Provide the final answer as a percent rounded to two decimal places.

4. Question: The dataset below represents bugs found by a software tester in her product during different phases of testing: 88, 84, 81, 94, 91, 98, 98, 200………… The measures of central tendency are given below:
Mean: 25; Median: 92.5; Mode: 98. Identify the outlier and the measure of central tendency that is affected by the outlier.

5. Question: The following data set represents the ages of all six grandchildren in a family……….. Find the variance for this data set of ages: 6, 3, 14, 11, 14, 6……. Round the final answer to one decimal place.

6. Question: The following data set represents the ages of all seven grandchildren in a family….. 4, 5, 11, 12, 11, 8, 5….. If the variance of the ages is 9.7, what is the standard deviation?…. Round the final answer to one decimal place.

7. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median……. 20,46,19,14,42,26,33

8. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following number of cards drawn from a deck until a queen appears…… 3,12,3,11,5,5,3,10,12

9. Question: Given the following list of data, what is the five-number summary?
2, 2, 2, 3, 3, 4, 4, 5, 6, 10, 11, 11, 13, 13, 14

10. Question: The box-and-whisker plot shows the number of books read by history students during the last school year……….. A box and whisker plot with minimum 4, first quartile 6, median 8, third quartile 10, and maximum 15……What is the range of the data?

11. Question: The five number summary for a set of data is given below.

Min     Q1       Median           Q3       Max

61        69        72                    79        86

Using the interquartile range, which of the following are outliers? Select all correct answers.

12. Question: Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below…. 16,14,14,21,15….. Find the mean boxes sold.

13. Question: Given the following list of the number of voicemails each employee received at an office during the last workday, find the median…… 11,4,21,8,7,2,3,17,26,4,6

14. Question: Fill in the following contingency table and find the number of students who both go to the beach AND go to the mountains……. 

15. Question: Which of the data sets represented by the following box and whisker plots has the smallest standard deviation?….. Four horizontal box-and-whisker plots share a vertical axis with the classes D, C, B, and A and a horizontal axis from 0 to 120 in increments of 20. The box-and-whisker plot above the class label A has the following five-number summary: 44, 69, 77, 82, and 112. The box-and-whisker plot above the class label B has the following five-number summary: 19, 64, 78, 87, and 121. The box-and-whisker plot above the class label C has the following five-number summary: 60, 72, 75, 80, and 92. The box-and-whisker plot above the class label D has the following five-number summary: 2, 63, 77, 92, and 138. All values are approximate.

16. Question: Researchers want to study whether or not a fear of flying is … to a fear of heights. They surveyed a large group of people and asked them whether or not they had a fear of flying and whether or not they had a fear of heights. The data are … in the contingency table below. What is the relative risk of being afraid of heights for those who are afraid of flying? Round your answer to two decimal places……. Afraid of flyingNot afraid of flyingTotalAfraid of heights7682158Not afraid of heights33370403Total109452561

17. Question: Diana is packing a lunch that will include an orange. Diana has 3navel oranges, 5 mandarin oranges, and 4 Valencia oranges. If Diana selects an orange at random, what is the probability that she selects a navel orange?…… Give your answer as a fraction. 

18. Question: A spinner contains the numbers 1through 80. What is the probability that the spinner will land on a number that is not a multiple of 11?…… Give your answer in fraction form.

19. Question: A student wants to know his average homework grade for the first half of his math class. There were 7homeworks in the first half of the class, and his grades out of 100 are given by…… 100,90,95,89,92,85,95.

What is the population mean of his homework grades? Round your answer to the nearest tenth.

20. Question: Is the statement below true or false?…… Independent is the property of two events in which the knowledge that one of the events occurred does not affect the chance the other occurs.

21. Question: A group of 140students at an elementary school were asked if they prefer the color orange to the color green. The results are shown in the table below. Given that a randomly selected survey participant is a male, what is the probability that this student prefers the color green?

22. Question: Given the following histogram, decide if the data is skewed or symmetrical……. A bar graph has a horizontal axis titled Values labeled from 2 to 18 in increments of 2 and a vertical axis titled Frequency labeled from 0 to 200 in increments of 50. 14 bars are … above the numbers 2 to 16. From left to right, the heights of the bars are as follows: 1. 5. 10. 40, 75, 125, 190, 180, 130, 125, 60, 25,20, 10. All values are approximate.

23. Question: Of the following pairs of events, which pair has mutually exclusive events?

24. Question: The graph below shows the graphs of several normal distributions, labeled A, B, and C, on the same axis. Determine which normal distribution has the smallest standard deviation……. A figure consists of three curves along a horizontal axis, labeled Upper A, Upper B and Upper C. Curve Upper A is short and the most spread out, curve Upper B is tall and the least spread out, and curve C is farther to the left than A.

25. Question: A magician appears to be using a biased coin during one of their magic tricks. To find out whether this is true, the alleged unfair coin is flipped twice. The tree diagram below shows the probabilities of the different outcomes…… A tree diagram has a root that splits into 2 branches representing the outcomes of an event labeled Upper H and Upper T with probabilities StartFraction 3 Over 8 EndFraction and StartFraction 5 Over 8 EndFraction respectively. Each primary branch splits into 2 secondary branches, labeled Upper H and Upper T. The secondary branches have the following probabilities, with the primary and secondary branches listed first and the probability listed second: Upper H Upper H, StartFraction 3 Over 8 EndFraction; Upper H Upper T, StartFraction 5 Over 8 EndFraction; Upper T Upper H, StartFraction 3 Over 8 EndFraction; Upper T Upper T, StartFraction 5 Over 8 EndFraction…… Use the diagram to find the probability of getting one head and one tail (in either order)……. Provide the final answer as a fraction.

Available Answer
$ 8.00

[Solved] MATH 225N Week 4 Quiz and Answers (Spring Term) REVISED VERSION WITH CORRECT ANSWERS (2020/2021)

  • This solution is not purchased yet.
  • Submitted On 20 Apr, 2021 02:34:22
Answer posted by
Online Tutor Profile
solution
Brayden tosses a coin 500 Of those 500times, he observes heads a total of 416 times. Calculations show that the probability of this occurring by chance is less than 0.01, assuming the coin is fair. Determine the meaning of the significance level. 2. Question: Suppose X∼N(11,0.5), and x=12. Find and interpret the z-score of the standardized normal random variable. 3. Question: A normal distribution is observed from the times to complete an obstacle course. The mean is 69seconds and the standard deviation is 6 Using the Empirical Rule, what is the probability that a randomly selected finishing time is greater than 87 seconds?……. Provide the final answer as a percent rounded to two decimal places. 4. Question: The dataset below represents bugs found by a software tester in her product during different phases of testing: 88, 84, 81, 94, 91, 98, 98, 200………… The measures of central tendency are given below: Mean: 25; Median: 92.5; Mode: 98. Identify the outlier and the measure of central tendency that is affected by the outlier. 5. Question: The following data set represents the ages of all six grandchildren in a family……….. Find the variance for this data set of ages: 6, 3, 14, 11, 14, 6……. Round the final answer to one decimal place. 6. Question: The following data set represents the ages of all seven grandchildren in a family….. 4, 5, 11, 12, 11, 8, 5….. If the variance of the ages is 9.7, what is the standard deviation?…. Round the final answer to one decimal place. 7. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median……. 20,46,19,14,42,26,33 8. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following number of cards drawn from a deck until a queen appears…… 3,12,3,11,5,5,3,10,12 9. Question:...
Buy now to view the complete solution
Other Similar Questions
User Profile
NICOL...

MATH 225N Week 8 Final Exam and Answers (Version 2) 2021) Performing Linear Regressions

An amateur astronomer is researching statistical properties of known stars using a variety of databases. They collect the absolute magnitude or MV and stellar mass or M⊙ for 30 stars. The absolute magnitude of a star is the...
User Profile
NICOL...

MATH 225N Week 8 Final Exam VERSION 1 Questions and Answers 2020/2021

A fitness center claims that the mean amount of time that a person spends at the gym per visit is 33 Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter μ. Question: The answer ch...
User Profile
NICOL...

MATH 225N Week 7 Hypothesis Testing Questions & Answers 2020/2021

Steve listens to his favorite streaming music service when he works out. He wonders whether the service algorithm does a good job of finding random songs that he will like more often than not. To test this, he listens to 50...
User Profile
NICOL...

MATH 225N Week 6 Confidence Intervals (Questions and Answers) 2020/2021

On a busy Sunday morning, a waitress randomly sampled customers about their preference for morning beverages, Specifically, she wanted to find out how many people preferred coffee over tea. The proportion of customers that ...
User Profile
NICOL...

MATH 225N Week 4 Homework Assignment: Probability Questions & Answers 2020/2021

Which of the pairs of events below is dependent? Select the correct answer below: Question: Identify the option below that represents dependent events. Select the correct answer below: Question: … shows mutually exclusive...

The benefits of buying study notes from CourseMerit

homeworkhelptime
Assurance Of Timely Delivery
We value your patience, and to ensure you always receive your homework help within the promised time, our dedicated team of tutors begins their work as soon as the request arrives.
tutoring
Best Price In The Market
All the services that are available on our page cost only a nominal amount of money. In fact, the prices are lower than the industry standards. You can always expect value for money from us.
tutorsupport
Uninterrupted 24/7 Support
Our customer support wing remains online 24x7 to provide you seamless assistance. Also, when you post a query or a request here, you can expect an immediate response from our side.
closebutton

$ 629.35