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QUESTION 4 5 points Save Answer A home economist wants to estimate the mean temperature of the typical shower. In a random sample of 16 people, the mean temperature of their showers was 101 F with a standard deviation of 2.40 F. Assuming all conditions of inference were met, what is a 95% confidence interval estimate for the mean typical shower temperature for all people? OA. 101 + 1.96 2.4 OB. 101 + 1.96 V2.4 4 Oc. 101 + 2.131 V2.4 16 OD. 101 + 2. 131 2.4 OF. 101 + 2. 131 2.4 16 QUESTION 5 5 points Save Answer A researcher is interested in determining the mean energy consumption of a new compact florescent light bulb. She takes a random sample of 41 bulbs and determines that the mean consumption is 1.3 watts per hour with a standard deviation of 0.7. When constructing a 97% confidence interval, which would be the most appropriate value of the critical value? 1.936 2.072 O 2.250 2.704 2.807QUESTION 1 5points SaveAnswer In a survey of a random sample of 450 Virgin Islanders, 75 percent say they enjoy hot pepper sauce on their food. If the margin of error is 2.3 percent, what is the level of confidence? OA.67% 03.74% 00.37% 00.90% OE. 93% QUESTION 2 5points SaveAnswer When making an inference about a population mean, which of the following suggest the use of zscores rather than tscores? O A. The population is normal 0 B. The sample size is under 30 O B.The absence of outliers O D.The population standard deviation is known 0 E. The absence of a strong skew QUESTION 3 5points SaveAnswer How large of a random sample is required to insure that the margin of error is 0.08 when estimating the proportion of college professors that read science fiction novels with 95% confidence