I need solve this questions from Q12 to Q17

A Hi-Tech company has introduceo a new fash disk. Some dealers and customers have complained that some of the new disks are defective. In order to investigate this the company randomly tested 300 disks and found that 30 were defective. A 99% condence interval for the proportion of all fash disks that are defective was (5.54%, 14.45%). Which one of the following statements is the correct interpretation of the results? With probability 99%, the condence interval (5.54%. 14.46%} contains the true population proportion. Of all the fash disks 99% of the fash disks in the sample are defective between 5.54% and 14.46%. None of these are true. We are 99% condent that (5 54%, 14.46%) contains the true population proportion. QUESTION '13 The price of iPhone 13 pro max is recorded at a random sample of 40 electronics stores in UAE. The resulting 90% condence interval for the mean price of iPhono 13 pro max was (3013 Dhs, 3353 Dhs]. Find the margin of error (E) of the 90% condence interval. Round your answer to one decimal place. QUESTION 14 Suppose students' ages follow a right skewed distribution with a mean of 21 years old and a standard deviation of 2 years. If we select a random sample of size n= 25 students. what is the probability that the sample mean age is less than 20 years? Not enough information. 0.?892 0.3035 0.4532 QUESTION 15 Asurvey of 13 adults in UAE found that the mean age for a person's primary vehicle is 3.3 years and a standard deviation of 0.4 year. Assuming that the population is normally distributed. Find the lower condence limit tLCL) of the 95% condence interval for the population mean age. Round your answer to mmdecinal places. QUESTION 16 At the local car shop, the amount of time required for an oil and lter change on an automobile is normally distributed. A random sample of 25 cars is selected yields a mean of 41 minutes and a standard deviation of 9.85 minutes. What is the margin of error for computing the 95% condence interval for the populaton mean time? Round your answer to than decimal places. QUESTION 17 The monthly rents for studio apartments in Abu Dhabi have a mean of AED 3650 and a standard deviation of AED 300. Random samples of size 16 are drawn from the population. Find the mean and standard error of the mean monthly rents for studio apartments