Problem 1 - of a random sample of 600 trucks at a bridge

Reference no: EM13382378

PROBLEM # 1 - Of a random sample of 600 trucks at a bridge, 114 had bad signal lights. Construct a 95 percent confidence interval for the percentage of trucks that had bad signal lights.

PROBLEM # 2 - What sample size is needed to obtain a 90 percent confidence interval for the mean protein content of meat if the estimate is to be within 1 pounds of the true mean value? Assume that the variance is 49 pounds.

PROBLEM # 3 - A cable TV company wants to estimate the percentage of cable boxes in use during an evening hour. An approximation is 20 percent. They want the estimate to be at the 95 percent confidence level and within 2 percentage points of the actual proportion. What sample size is needed?

Reference no: EM13382378

Questions Cloud

A coin is tossed until obtainning a head or tossing it up : a coin is tossed until obtainning a head or tossing it up to three times whatever happens first. if x represent the

The life span of a battery is normally distributed with a : the life span of a battery is normally distributed with a mean of 2500 hours and at percent of batteries have a life

The computer anxiety rating scale cars measures an : the computer anxiety rating scale cars measures an individuals level of computer anxiety on a scale from 20 no anxiety

Problem 1 - what sample size is needed to obtain a 90 : problem 1 - what sample size is needed to obtain a 90 percent confidence interval for the mean protein content of meat

Problem 1 - of a random sample of 600 trucks at a bridge : problem 1 - of a random sample of 600 trucks at a bridge 114 had bad signal lights. construct a 95 percent confidence

1-state whetherbeach othe following true or false and : 1-state whetherbeach othe following true or false and explain whya a high negative correlation value for example p-.95

1 at your supermarket the typical shopper spends 1893 with : 1. at your supermarket the typical shopper spends 18.93 with a standard deviation of 12.52. you are wondering what

The evidence linking global warming to human activity-such : the evidence linking global warming to human activity-such as burning fossil fuels-is weak. therefore human activity

Retired workers and disabled workers both receive social : retired workers and disabled workers both receive social security benefits. what information would we need to test the

User Account

All Pages