Construct the indicated confidence interval for the population mean y using the t- distribution. Assume the population is normally distributed. C=0.99, x=12.6,  s= 0.81, n=17

The time to travel to school for high school students in South Bend is known to have a normal distribution with a standard deviation of o = 15 minutes. You take a simple random sample of 40 South Bend high school students students, and their average time to travel to school is 25 minutes. Find the 90% confidence interval for the population mean time. O A. (21.91, 28.09) B. (21.96, 28.04) O C. (21.00, 29.00) D. (21.10, 28.90)

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that an individual has an IQ higher than 94.   Find the probability that an individual has an IQ between 85 and 112.   Find the IQ score that separates the highest scoring 28.1% from the rest of the population.

Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…