A researcher claims that a post-lunch nap decreases the amount of time it takes males to sprint 20 meters after a night with only 4 hours of sleep. The table shows the amounts of time (in seconds) it took for 10 males to sprint 20 meters after a night with only 4 hours of sleep when they did not take a post-lunch nap and when they did take a post-lunch nap. At a 0.01, is there enoughevidence to support the researcher's claim? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (e) below.MaleSprint time (without154.01 3.93 3.95 4.05 3.00 4.06 3.93 4.05 3.97 3.05Sprint time (with nap)4.00 3.03 3.04 4.05 3.03 4.04 3.94 4.02 3.00 3.92(a) Identify the claim and state Ho and H₂-What is the claim?A A post-lunch nap decreases the amount of time it takes males to sprint 20 metersOB. A post-lunch nap increases the amount of time it takes males to sprint 20 metersOC. A night with only 4 hours of sleep increases the amount of time it takes males to sprint 20 meters.OD. A night with only 4 hours of sleep decreases the amount of time it takes males to sprint 20 meters.Let be the hypothesized mean of the difference in the sprint times (without nap-with nap). What are H, and H,?OD 1:4-0H₂O(b) Find the critical value(s) and identify the rejection region(s).Select the correct choice below and fill in any answer boxes to complete your choice(Round to two decimal places as needed.)○ A. 14OB 1OC POC. H₁₂H₂ saOB KROCOE 16:120F. HOH₂: 140

The question is about hypothesis testing.Given :Number of males selected ( n ) = 10Sprint time…

Answered: ence to support the researcher's clam?…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Which of the following are assumptions for testing a single population proportion? (Select all that apply.) O The variable of interest is numerical. O The variable of interest is categorical. The sample size is at least 15. The sample size is at least 30. The number of success and failures based off the sample proportion are at least 15. The number of success and failures based off the sample proportion are at least 30. The number of success and failures based off the claimed proportion are at least 15. O The number of success and failures based off the claimed proportion are at least 30. O The population is normal. Random sample. O Independent observations within the sample.
Q According to a recent article about individuals who have credit cards, the mean number of cards per person with credit cards is 4. To test this result a random survey of 60 individuals who have credit cards was conducted. The survey only includes the number of credit cards per participant. The results of the survey are attached below. (a) What is the variable of interest in this study? Is it qualitative or quantitative? (b) Do the results of the survey imply that the mean number of cards per individual is less than 4? Use the a= 0.05 level of significance. Click the icon to view the data from the survey. C (a) What is the variable of interest in this study? Is it qualitative or quantitative? The variable of interest is It is a ▼variable. D Clear all Check answer Help me solve this View an example Get more help. 5:42 PM 6/18/2022 E Type here to search 3 7 S X E D C "42 $ R F % 5 T G 40 6 B Y H N C N 8 J M 9 K P 97°F Mostly sunny delete prt sc end 7 1
please answer blank questions only and or ones with a red x next to them.
I of 10 (0 complete) v 7.1.1 A population has mean of 121. If a random sample of 8 items from the population results in the following sampled values, what is the sampling error for the sample? 116 122 98 145 148 110 141 144 O The sampling error for the given sample is. (Simplify your answer. Do not round.) Enter your answer in the answer box and then click Check Answer. Clear All All parts showing MacBook Air
Which of the following statements are true?
need help with d,f,g
Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone? For a random sample of tropical cyclones, let x be the lowest pressure (in millibars) as a cyclone approaches, and let y be the maximum wind speed (in miles per hour) of the cyclone. x 1,004 975 992 935 971 924 y 40 100 65 145 77 154 Use a calculator to verify that x = 5,801, x2 = 5,613,547, y = 581, y2 = 66,495 and xy = 554,778.Compute r. (Round your answer to four decimal places.)r = As x increases, does the value of r imply that y should tend to increase or decrease? Explain your answer.Given our value of r, y should tend to remain constant as x increases.Given our value of r, y should tend to decrease as x increases. Given our value of r, y should tend to increase as x increases.Given our value of r, we can not draw any conclusions for the behavior of y as x increases.
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 32 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a= 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 32 31 26 31 34 41 25 24 290 27 30 33 30 29 28 30 25 23 OD. Ho p 32 Ha p2 32 Ha p< 32 Ha us 32 (b) Use technology to find the P-value. P = (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer.
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 34 27 26 35 29 39 25 26 290 28 28 34 30 32 28 29 26 24 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H3? O A. Ho: H= 31 B. Ho, μs 31 O c. Ho : μ= 3 Ha: H#31 Ha: u> 31 Ha: H31 OF. Ho: H231 Ha: u231 Ha: us 31 Ha: µ<31 (b) Use technology to find the P-value. P = (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Which of the following is correct? O A. Reject Ho because the P-value is less than the significance level. O B. Fail…
Assume that two dependent samples have been randomly selected from normally distributed populations. A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The results are given below. Before 74 80 72 80 80 67 93 85 91 77 After 73 80 70 83 78 68 90 82 87 75 Provide a 90% CI on the difference. Round your answers to 3 decimals. Provide negative signs when appropriate. Use leading zeros for values less than 1. Lower Limit: Upper Limit: Based on the results of your CI, what is the conclusion to a two-tailed hypothesis test at alpha = .10? Reject Ho / Do Not Reject Ho Do the results suggest there is a difference in means at alpha = .10? Yes / No
cen the othe tral wor 24. A researcher conducts a study comparing two dif- ferent treatments with a sample of n = 16 partici- pants in each treatment. The study produced the following data: study an mean nu tolerate Treatment 1: 6 7 11 4 19 17 2 5 9 13 6 23 11 4 6 1 tions. D tolerance Treatment 2: 10 9 6 61 11 8 6 3 2 11 1 127 10 9 Particip a. Calculate the mean for each treatment. Based on the two means, which treatment produces the higher scores? 2. b. Calculate the median for each treatment. Based on the two medians, which treatment produces the higher scores? 3. 4. 5. c. Calculate the mode for each treatment. Based on the two modes, which treatment produces the higher scores? L 0. 6

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