5. A random sample of size 5 is taken from a uniform distribution on the interval O to 0 In testing Họ: 0=2 versus Hạ: 0=2.5 the null hypothesis is rejected if the largest order statistic is 1.8 or larger. Find a, the level of significance of the test.

The average American gets a haircut every 43 days. Is the average larger for college students? The data below shows the results of a survey of 11 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 38, 37, 38, 45, 53, 55, 35, 37, 35, 41, 38 What can be concluded at the the α = 0.05 level of significance level of significance? For this study, we should use? Select an answer: t-test for a population mean?  z-test for a population mean?         The null and alternative hypotheses would be:              H0:H0?   p  or  μ  Select an answer > = ≠ ≤ < ≥                H1:H1?  μ  or p  Select an answer ≠ ≥ > ≤ = <         2. The test statistic ? t z  =  (please show your answer to 3 decimal places.)           The p-value = _______ (Please show your answer to 3 decimal places.)           The p-value is? > or  ≤  α      3.  Based on this, we should?? Select an answer reject ? accept ? or  fail to reject ?…

Test the research hypothesis that there is a difference in weights between the two groups at the 0.05 significance level? Assume the equality of variance, adequate sample size, and normal distribution for both the groups to test the hypothesis. X1 = 200   X2 = 198   n1 = 17   n2 = 17   s1 = 2.45   s2 = 2.35 Please show all the necessary steps of hypothesis testing to answer this question.

A data set includes data from student evaluations of courses. The summary statistics aren=98, x= 3.41, s= 0.59. Use a 0.01 significance level to test the claim that the population of student course evaluations has a mean equal to 3.50. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. ..... What are the null and alternative hypotheses? ОВ. Но и3.50 O A. Ho:u=3.50 H,:µ> 3.50 OA. Hqi H#3.50 O C. Ho: H= 3.50 H1:µ<3.50 O D. Ho: µ#3.50 H1:µ= 3.50 Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. correct. V Ho. There is V evidence to conclude that the mean of the population of student course evaluations is equal to 3.50 MacBook 吕0 000 000 F7 F6 F5 F4 F3 esc F1 F2 & $ 7 8. 1 2 Y Q W E R

The random variable, x is a water quality parameter, suspended solids with units of parts per million (ppm). A sample size of 60 yields a mean of 59.87 ppm, and a standard deviation of 12.5 ppm. Water quality criteria requires that the suspended solids do not exceed a mean, µ, = 50 ppm . Test the hypotheses H.: u = µ, vs. HA: u > H. (right-tailed test) at a level of significance of 5 % and assume the pop variance is known.

These are the summary statistics for independent simple random samples from two populations. x1=23, s1=2, n1=10, x2=29, s2=7, n2=25 Left tailed test, significance level is 0.05 or 95% What is the test statistic, critical value, and conclusion for the hypothesis test?