STATISTIC QUESTION! Fairly Simple.

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A sample of 24 males from a certain population yielded a sample mean cheek skin thickness of 13.8 mm with an associated 95% confidence interval of 11.0 mm to 16.6 mm. Suppose the assumptions of the procedure they used were met. Of the following options, which one is the best interpretation of that interval? )We can be 95% confident that the sample mean cheek skin thickness of the 24 males lies between 11.0 mm and 16.6 mm. )We can be 95% confident that the true mean cheek skin thickness of males in this population lies between between 11.0 mm and 16.6 mm. In repeated sampling, 95% of the 95% confidence intervals calculated in this manner will capture the mean cheek skin thickness of the 24 males in the sample. )95% of males in this population have cheek skin thickness between 11.0 mm and 16.6 mm.Suppose we wish to test the null hypothesis that the means of two populations are equal. We decide to use the pooled-variance t procedure to carry out the test. We draw independent samples of 90 observations from each population, and find X1 = 17.7, X2 =1.4, and SE(X1 - X2) =3.1. What is the value of the appropriate t statistic? (Give your numeric response to at least 3 decimal places. Give only the number, and not any additional characters or symbols. (If the value is negative, include the minus sign.)) Your Answer: Your AnswerSuppose it has previously been claimed that the proportion of households in a certain region that own their home is 0.40, and suppose we wish to carry out a test of the null hypothesis that this is the true proportion. In a random sample of 1200 households in this region, 508 own their home. What is the value of the appropriate Z test statistic? (Give your numeric response to at least 3 decimal places. Give only your numeric response, and not any extra characters or symbols. If the value is negative, include the negative sign) Your Answer: Your