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A fast food center wishes to estimate the proportion of people in its city that will buy its products. Suppose the true proportion is 0.05
If 394 people are sampled, what is the probability that the sample proportion will be less than 0.08?
The distribution of meansdistribution and the distribution of means, showing the t score and cutoff points for significance. (c) Explain your answer to someone who has never taken a course in statistics.
a lending institution supplied the following data on loan approvals by four loan officers. use a 0.5 and test to
in a poll of n 200 randomly selected individuals 60 people said they are opposed to the death penalty for persons
assume you are requested to gather data on the time it takes for a single employee to process product returns at a
You want to estimate today's mean temperature, so you make a series of measurements (taken as a sample) throughout the day. The mean of these measurements is 63 degrees Fahrenheit, and their standard deviation is 3.4 degrees Fahrenheit.
A slot machine in Reno costs $1 to play. If the jackpot is $1,000 and the expected value is $ - 0.50 find the probability of winning.
The U.S. Department of Transportation defines an airline flight as being "on-time" if it landed less than 15 minutes after the scheduled time shown in the carrier's Computerized Reservation System.
Alexa got 144 on her test which has a mean of 128 and a standard deviation of 34. What is her z-score?How do you calculate the z score for the raw score of 10 based on the following distribution: 8, 9, 15, 30, 7, 8 ?
State the number of degrees of freedom that are associated with each of the following extra sum of squares and why this is the case:
the length of time in seconds that a user views a page on a web site before moving to another page is a lognormal
assume you are requested to survey middle-aged men in a particular neighborhood on their weights. you gather data from
(a) Write the fitted regression equation, (c) What is your conclusion about the slope.
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