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The Laurier Company's brand has a market share of 30%. Suppose that 1,000 consumers of the product are asked in a survey which brand they prefer. What is the probability that more than 32% of the respondents say they prefer the Laurier brand?
suppose a manufactuirng company make a certain item. the time to produce each item is normally distributed around a
Describe a business situation where you would want to use a t-test. Why would you choose that test? What would you expect to show by doing this?
a survey was conducted at a local high school to determine the number of hours that a student studied for the final
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distributed with a mean of 4.5 inches and a standard deviation of 0.3 inches.
q1. what are the main difference between the frequency distribution of continuous data and discrete data.q2. how would
Find (i) the percentage of batteries with a life time of at least 470 hours (ii) the proportion of batteries with life time between 385 and 415 hours. (iii) the minimum life of the best 5% of batteries.
What is the relative frequency of classical CDs with a playing time of X less than 49 minutes? That is, find the relative frequency of the event X
A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15
let 18 and 10 be the standard deviations of the independent random variables x and y respectively.what is the standard
any conclusion drawn for the t-test statistical process is only as good as the research question asked and the null
a publisher wants to estimate the mean length of time in minutes all adults spend reading newspapers. to determine this
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