You measure 21 watermelons' weights, and find they have a mean weight of 47 ounces. Assume the population standard deviation is 5.6 ounces. Based on this, what is the maximal margin of error associated with a 90% confidence interval for the true population mean watermelon weight. Give your answer as a decimal, to two places H ounces

A particular fruit's weights are normally distributed, with a mean of 747 grams and a standard deviation of 8 grams. The heaviest 13% of fruits weigh more than how many grams? Give your answer to the nearest gram.

Find the sample size required to estimate the percentage of statistics students who take their statistics course online.  Assume that we want 95% confidence that proportion from the sample is within two percentage points of the true population percentage.

To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 45 feet. Assume the population standard deviation is 4.6 feet. The mean braking distance for Make B is 46 feet. Assume the population standard deviation is 4.3 feet. At a= 0.10, can the engineer support the claim that the mean braking distances are different for the two makes of automobiles? ASsume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table, Click here to view page 2 of the standard normal distribution table. 19.82 of 24 pts Question Help v O (a) Identify the claim and state Ho and H What is the claim? O A. The mean braking distance is greater for Make A automobiles than Make Bautomobiles. O B. The mean braking distance is…

A statistics practitioner took a random sample of 54 observations from a population whose standard deviation is 32 and computed the sample mean to be 109. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 90% confidence. Confidence Interval = C. Estimate the population mean with 99% confidence. Confidence Interval =

A particular fruit's weights are normally distributed, with a mean of 382 grams and a standard deviation of 15 grams.The heaviest 14% of fruits weigh more than how many grams?Give your answer to the nearest gram.

A particular fruit's weights are normally distributed, with a mean of 786 grams and a standard deviation of 17 grams. The heaviest 18% of fruits weigh more than how many grams? Give your answer to the nearest gram.

You measure 46 textbooks weights, and find they have a mean weight of 45 ounces. Assume the population standard deviation is 11.1 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places

You measure 50 textbooks' weights, and find they have a mean weight of 58 ounces. Assume the population standard deviation is 14.7 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight.Report your answers to three decimal places. Confidence Interval = (        ,        )

An engineer wishes to determine the width of a particular Electronic Component. If she knows that the standard deviation is 3.8 mm how many of these components should she consider to be 90% sure that mean will be 0.2 mm