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The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
Answer to a problem based on statistical graphics.Create a c-bar chart and determine if corrective action is needed.
The mean time to download an Google video is 1 minute 30 seconds. Suppose the download time is normally distributed with standard deviation of 20 seconds.
By using the fact that Martha believes the treatment will decrease the amount of time to fall asleep, describe the null and alternate hypotheses.
Additionally, student should use graphing function to graph data and calculate regression equation.
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Four wheel bearings have been replaced on a company car. The mechanic has selected 4 bearings from a large supply bin. The mechanic is unaware that 10 percent of the bearings fail within the first 100 miles.
Use Bayes's rule to find the conditional probability that Julianne is a carrier, given that she and Jason have one child who does not have cystic fibrosis.
Compute the range and interquartile range
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
What would you predict the price per share to be if 95 million shares were offered?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
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