How many TV sets? A survey organization sampled 62 households in a community and found that the sample mean number of TV sets per household was 3.1.The population standard deviation is o= 1.5. Can you conclude that the mean number of TV sets per household is greater than 3?E = rl : °HH:u >3Part: 0/ 4Part 1 of 4(a) Which test is appropriate here?OT testO Z testSubmit AssignmerNext PartMacBook AirDD80888F11F8F9F10F7F1F2F3F4F5%2324&46.8.* C0

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Answered: How many TV sets? A survey organization…

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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H0: μ ≤ 16.09 vs. HA: μ > 16.09What is the test statistic for sample of size 25, mean 13.97,and standard deviation 1.48?
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Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?
Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 137 adult males, the mean pulse rate is 70.2 bpm and the standard deviation is 10.7 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
1:49 The range is $ 250. K An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was $422, $465, $404, $215. Compute the range, sample variance, and sample standard deviation cost of repair. S =dollars² (Round to the nearest whole number as needed.) ||| = Vo) 1 LTE2.II 4G .Il O 47% <
Scores on a standardized exam are normally distributed with a mean of 517 and a standard deviation of 60. The figure below shows the distribution of the scores on a standardized exam. Cal- culate the shaded area under the curve. Express your answer in decimal form accurate to at least two decimal places. Answer: 397 457 The Scores on a Standardized Exan
Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Refer to the accompanying data set. Use a 0.01 significance level to test the claim that women and men have the same mean diastolic blood pressure. E Click the icon to view the data for diastolic blood pressure for men and women. O A. H H=H H: H >2 O B. H H <2 H =2 O P. H H =2 H 2 OC. H: HHz Calculate the test statistic. t= (Round to two decimal places as needed.) Find the P-value. P-value = (Round three decimal places as needed.) Make a conclusion about the null hypothesis and a final conclusion that addresses the original claim. H. There V sufficient evidence to warrant rejection of the claim that women and men have the same mean diastolic blood pressure. Reject nswer(s) Fail to reject Show All a Persuasive Spee.doc a PersuasiveSpch.doc a SamplePPTforP.pptx a Persuasive Spe.docx stv MacBook Air 888 FA esc F1…
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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 129.5-cm and a standard deviation of 0.8-cm. For shipment, 27 steel rods are bundled together.Find P69, which is the average length separating the smallest 69% bundles from the largest 31% bundles.P69 = ________-cmEnter your answer as a number accurate to 2 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?
A random sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 275. This test result prompts a state school admini exam is more than 270. Assume that the population standard deviation is 31. At a=0.09, is there enough evidence to support the administrator's claim? Complete parts (e (a) Write the claim mathematically and identify Ho and H,. Choose the correct answer below. O A. Ho u2270 (claim) Hp 270 OE Hiu=270 (claim) H> 270 Oc. OD. Ho: u=270 Haiu> 270 (claim) OF (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.) (c) Find the P-value. P-value= (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Reject H.
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