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? Ho:u =3 H:u >3 Part: 0/ 4 Part 1 of 4 (a) Which test is appropriate here? OT test O Z test

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?