Which one of the following statements about a confidence interval is TRUE? Changes in the required level of confidence, 1-alpha, do not affect the width of the confidence interval. The width of confidence interval is increased when the sample size is decreased. The width of confidence interval is increased when the sample size is increased. The wider the confidence interval, the least precise the estimate of the population parameter

Q: The diameter of deoxyribonucleic acid (DNA) molecule is about is about 20 angstroms. Express this…

A: Diameter of molecule= 20 angstroms.

Q: An airplane flies the 3000-mi distance from Los Angeles to New York, with a tailwind, in 5 hr. The…

A: The solution of the problem is given in the next step.

Q: Index was 220.2 in 2011 and 251.7 in 2019. What would have been theequivalent price in 2011 of a car…

A: Current price = $24,375  Consumer Price Index in 2011 = 220.2 Consumer Price Index in 2019 = 251.7

Q: Ms. Duncan’s class wants to estimate how many blades of grass are in a rectangular section of the…

A: To find out the number of blades of grass in that rectangular section.

Q: On a steep mountain road the elevation dropped at the rate of 9 feet per 60 feet. Using signed​…

A: Here we have to find the rate at which the road dropped per

Q: A pot of boiling soup with an internal temperature of 100° Fahrenheit was taken off the stove to…

A:

Q: A pilot flew for 210 miles at 21 degrees and then 147 miles at 162 degrees. How far was he from his…

A: Topic = Triangles

Q: A car is driving at 30 kilometers per hour. How far, in meters, does it travel in 3 seconds? meters…

A:

Q: Annie skated 1 3/4 miles from home to the lake, then went 1 1/3 miles around the lake before going…

A:

Q: Find the Richter magnitude of an earthquake that was 670,000,000 times the intensity of the base…

A: In this problem we have to find the magnitude of an earthquake. Here we use the following formula

Q: What size would you see on the box for a new television whose screen measures 40 inches wide by 15…

A:

Q: The state of Texas has an area of approximately 7 × 10° square miles. The country of Asia is…

A: To compare two quantities, take the ratio of both.

Q: Within 24 hours in 1916, the temperature in Browning, Montana, fell from 44°F to -56°F. How large a…

A: Given, the temperature fell from 44oF to -56oF The Drop can be obtained by Subtracting the smaller…

Q: Mr. Tan files from London to Los Angeles, a distance of 8800km. The flight takes 11 hrs and 10min.…

A:

Q: Rounded to the nearest tenth, Jupiter is how many times further from the sun than the earth is from…

A: Data taken from NASA website : The table below gives the distance from the Sun of the eight planets…

Q: The area of Alaska is approximately 3.66 x 10 acres. The state was purchased in 1867 from Russia for…

A: The total Area Purchased is 3.66×108 for  $7.2 million

Q: A plate 67.68 millimeters thick is to be machined to a thickness of 52.7 millimeters. The plate is…

A: Given  Thickness of a plate = 67.68 millimeters  The plate is machined to the thickness of 52.7…