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A survey of 369 working parents found 200 who said they spend too little time with their children because of work commitments.
- What is the points estimate of the proportion of the population of working parents who feel they spend too little time with their children because of work commitments?
- What is the margin of error for 95% confidence level?
- What is the 95% confidence interval for the proportion of working parents who feel they spend too little time with their children because of work commitments?
- What sample size should have been used if a margin of error 0f 0.03 was desired.
The company can either settle out of court for $250,000 or go to court. If the company goes to court and loses, it must pay $825,000 plus $175,000 in court costs. If it wins in court the plaintiffs pay the court costs. Identify the states of natur..
a certain brand of flood lamps has a lifetime that has a normal distribution with a mean of 3750 hours and a standard
use your calculator or other software to conduct a test of the hypothesis that mu6 vs mult6 for the following data.
a helical tension spring is made of 1.2 mm wire having a yield strengths of 1280 mpa tension and 740 mpa torsion. the
1 the distribution of diastolic blood pressure bp for adults in the u.s. has a mean of 80 mmhg millimeteres of mercury
what proportion of the data from a normal distribution is two standard deviations from the mean?1. 0.47722. 0.34133.
test the hypothesis that more females use instagram than males. samples of 500 female and 500 males were chosen and 430
A researcher discovers the number of parking tickets that a group of students have received during their driving careers. Twenty students reply and they have received between 9 and 20 parking tickets.
In order to test the effectiveness of a drug called XZR designed to reduce cholesterol levels, 9 heart patients' cholesterol levels are measured before they are given the drug.
Identify and justify which type of sampling (random, stratified, systematic, cluster, convenience) is used in the following examples.
barrons reported that the average number of weeks an individual is unemployed is 17.5 weeks barrons february 18 2008.
What percent of trucks logged more than 57,060 but less than 58,280 miles? What percent of Fords travelled 62,000 miles or less in the year?
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