In 2006 the mean weight of men was believed to be 86.8 kg. To testfor an increase in the weight a random sample of 100 men showed amean weight of 88.7 kg with a sample standard deviation of 11.64 kg.The null and alternative hypotheses are:Họ: µ = 86.8 ; H;: µ > 88.7Họ: u = 86.8 ; H1: µ < 86.8С.А.В.%3DHọ: µ = 86.8 ; H;: µ > 86.8Họ: µ = 86.8 ; H;: 86.8 < µ< 88 .7D.А. АВ. ВС. СD. D

Given : In 2006 the mean weight of men was believed to be 86.8 To test for an increase in the…

Answered: In 2006 the mean weight of men was…

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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Similar questions

According to the empirical rule (or the 68-95- 99.7 rule), if a population has a normal distribu- tion, approximately what percentage of values is within one standard deviation of the mean?
Suppose that IQ scores have a bell-shaped distribution with a mean of 96 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are between 79 and 17. 113?
The average American consumes 86 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 10 randomly selected college students and found that they averaged 92 liters of alcohol consumed per year with a standard deviation of 16 liters. What can be concluded at the the αα = 0.05 level of significance? The null and alternative hypotheses would be: Ho=?H1=? The test statistic t=? (please show your answer to 4 decimal places.)
A basketball analyst recently claimed that the average number of passes per possession in basketball today is less than 5. A random sample of 40 possessions had a mean number of passes of 4.1. The standard deviation of all possessions is known to be 2.4. Test the claim with 0.01 level of significance.
A series of measurements in the lab led to an experimental result of 32.9 mL, with a calculated standard deviation of 0.3 mL. What is the standard way to report this result? Select one: 32.6-33.2 mL 32.9 ± 0.3 mL 32.9 ± 0.30 mL = 32.9 mL
Suppose a certain dog breed has an average weight of 22.72 with a standard deviation of 4.30. What is the z-score of a dog whose length is 37.27? Answers should be correct to two decimal places.
During an economic crisis, the average value of homes in a community of 36 homes lost $9445 with a standard deviation of $1300. The average home value in the region lost $8990. Was this community of 36 homesunusual? Use a t-test to decide if the average loss observed was significantly different from the region value. Use a level of significance α=0.05. Identify the hypotheses for the test. H0: μ ▼ not equals≠ equals= greater than> less than< nothing HA: μ ▼ equals= greater than> not equals≠ less than< nothing The test statistic is nothing. (Round to two decimal places as needed.) The P-value is nothing. (Round to three decimal places as needed.) What is the conclusion of the test? Was the average loss observed significantly different from the region value? ▼ Reject Fail to reject the null hypothesis because the P-value is ▼ greater less than the given significance level, and conclude that the…
During an economic crisis, the average value of homes in a community of 36 homes lost $9284 with a standard deviation of $1450. The average home value in the region lost $8790. Was this community of 36 homes unusual? Use a t-test to decide if the average loss observed was significantly different from the region value. Use a level of significance α=0.05. Identify the hypotheses for the test. H0: μ ▼ less than< greater than> equals= not equals≠ nothing HA: μ ▼ less than< not equals≠ greater than> equals= nothing The test statistic is nothing. (Round to two decimal places as needed.) The P-value is nothing. (Round to three decimal places as needed.) What is the conclusion of the test? Was the average loss observed significantly different from the region value? ▼ Fail to reject Reject the null hypothesis because the P-value is ▼ greater less than the given significance level, and conclude that the…
A factory that manufactures bolts is performing a quality control experiment. Each object should have a length of no more than 19 centimeters. The factory believes that the length of the bolts exceeds this value and measures the length of 94 bolts. The sample mean bolt length was 19.06 centimeters. The population standard deviation is known to be o = 0.26 centimeters. What is the test statistic z? Ex: 1.23 What is the p-value? Ex. 0.123 Does sufficient evidence exist that the length of boltş is actually greater than the mean value at a significance level of a = 0.01?[ Select v
A recent study showed that the average number of sticks of gum a person chews in a week is 14. A college student believes that the guys in his dormitory chew less gum in a week. He conducts a study and samples 25 of the guys in his dorm and finds that on average they chew 17 sticks of gum in a week with a standard deviation of 3.1. Test the college student's claim at a=0.10. The correct hypotheses would be: Ο Η: μ 14 HA: 14 (claim) Ho: μ = 14 HA: The p-value is: 14 (claim) Since the level of significance is 0.10 the critical value is -1.318 The test statistic is: The decision can be made to: O reject Ho do not reject Ho (round to 3 places) (round to 3 places) The final conclusion is that: O There is enough evidence to reject the claim that less gum in a week. There is not enough evidence to reject the claim that less gum in a week. O There is enough evidence to support the claim that less gum in a week. O There is not enough evidence to support the claim that less gum in a week.
State the hypothesis for the following: The mean height of 50 male students who showed above-average participation in college athletics was 68.2 inches with a standard deviation of 2.5 inches, while 50 male students who showed no interest in such participation had a mean height of 67.5 inches with a standard deviation of 2.8 inches. O a. None of these. O b. HO: µ1-µ2; H1: µ1#µ2 O c. HO: µ1=p2; H1: µ1p2
A nutritionist claims that the mean tuna consumption by a person is 3.7 pounds per year. A sample of 50 people shows that the mean tuna consumption by a person is 3.4 pounds per year. Assume the population standard deviation is 1.18 pounds. At a = 0.02, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. A. Ho: HS3.4 Ha: > 3.4 B. Ho:µ= 3.7 c. Ho: H53.7 H: µ#3.7 Hai µ>3.7 D. Ho: µ> 3.4 O E. Ho: µ> 3.7 OF. Ho: u#3.4 Hg:H=3.4 Ha: HS 3.4 Ha:us3.7 (b) Identify the standardized test statistic. Z= (Round to two decimal places as needed.) nis

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