You want to estimate the average weight in tons of loads carried by trucks through a particular stretch of road. From previous information the standard deviation is expected to be o=17.15 tons. How many trucks must be weighed to estimate the the tons per truck to within 5 tons at a 90% level of confidence. Round your answer up to the largest whole number. n = trucks

Refer to the figure at the right. At a =0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? Assume the survey included a random sample of 248 men and 244 women. Percentage of 18-to 24-year olds living in parents' homes 70- 51.5% 41.2% 46.6% 44.3% 0- 2012 I Women 2000 Men Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: P1 #P2 Ha: P1 = P2 O B. Ho: P, P2 c. Họ: P1 = P2 Ha: P1 #P2 O D. Ho: P1 >P2 Ha: P1 SP2 Find the critical value(s). The critical value(s) is(are) ±1.65. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Find the standardized test statistic. (Round to two decimal places as needed.)

Find the value of the test statistic.  Round to 3 decimal places. Claim:  The proportion of Californians who have shopped online is 72% Data:  x = 300, n = 400

Please answer quickly!