Before agreeing to purchase a large order of polyethylene sheaths for a particular type of high- pressure oil-filled submarine power cable, a company wants to see conclusive evidence that the true standard deviation of sheath thickness is less than .05mm. What hypotheses should be tested, and why? In this context, what are the type I and type II errors?

At the end circle the final answer and answer all parts of the question, I could not understand it.

The question was meant to be x to the 7 halves

In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 53.3 inches, and standard deviation of 2.2 inches.What is the probability that the height of a randomly chosen child is between 51.3 and 57.1 inches? Do not round until you get your your final answer, and then round to 3 decimal places.Answer=___________ (Round your answer to 3 decimal places.)

What will it cost to tile a rectangular floor measuring 289 feet by by 41 feet if the tile costs $14 per square foot? OA. $344 B. $165,886 C. $9,240 D. $11,849

Match each set of measurements with the length of material needed to fence the area. The width of a house is 115 feet, and length of the yard is 185 feet The width of a house is 100 feet, and length of the yard is 200 feet The width of a pasture is 1,000 feet, and the length of the pasture is 550 feet The length of a pasture is 800 feet and the width of the pasture is 700 feet   485 feet 500 feet 3,000 feet 3,100 feet

A baseball team claims that the mean length of its games is more than 1.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is​ left-tailed, right-tailed, or​ two-tailed. Explain your reasoning.       State the null hypothesis in words and in symbols. Choose the correct answer below.     A. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is not 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≠1.4​."   B. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at least 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≥1.4​."   C. The null hypothesis expressed in words​ is, "the mean length of a baseball​ team's games is at most 1.4 ​hours." The null hypothesis is expressed symbolically​ as, ​"H0​: μ≤1.4​."   D. The null hypothesis expressed in words​ is, "the mean length of a…