I need solve this questions MCQ of Statistics

l i an\" n... . .u 08 A sample mean of 137, sample standard deviation of 14.2, and sample size of 20. Ho p=132, [-1111 132. o=0.01 are given. Use the one-mean t-test to perform the required hypothesis test about the mean, 11, of the population from which the sample was drawn. Use the P-value approach. Also. assess the strength of the evidence against the null hypothesis. 0 a. Test statistic: t = 1.57. P-value = 0.15.&; Reject the null hypothesis. 0 b. Test statisticzt = 1.57. P-value = 0.158.; Do not reject null hypothesis. 0 c. Test statistic: t a 1.57. P-value = 0.058.; Do not reject null hypothesis. 0 (1. Test statisticzt = 1.57. Pvalue = 0.05.&; Reject null hypothesis. 013 The monthly earnings of a group of business students are normally distributed with a standard deviation of 532 dollars. A researcher wants to estimate the mean monthly earnings of all business students. Find the sample size needed to have a condence level of 93% and a margin of error of 132 dollars. 0a. 58 oh. 46 0c. 76 Cd. 54 Q12 Travelocity would like to test if the average roundtrip airfare between New York and London is less than $1,400. A Type I error would occur if Travelocity concludes that the average airfare is O a. $1,400 or more when. in reality, the average airfare is less than $1,400. 0 b. equal to $1,400 when, in reality, the average airfare is not equal $1,400 or more. 0 c. not equal to $1,400 when. in reality, the average airfare is equal to $1,400. 0 (L less than $1,400 when, in reality, the average airfare is $1,400 or more. 014 A sample mean is 137, sample size is 20, and population standard deviation is 14.2 are given. Ho: 11:132. 11121194132 and a signicance level is 0.05. Use the P-value approach to test the hypothesis. 0 a. z = 2.57; P-value = 0.0101; reject null hypothesis 0 h. z = 0.35; P-value = 0.7263; do not reject null hypothesis 0 c. z = 1.57; P-value = 0.0582; do not reject null hypothesis 0 d. z = 1.57; P-value = 0.1164; do not reject null hypothesis