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In a random sample of 10 reduced fat chocolate chip cookies, the sample mean for the number of chocolate chips was 17.6. Regular chocolate chip cookies have a mean number of 20 chocolate chips. The population standard deviation for the reduced fat cookies was 3.8 chips. What is the p value associated with this test?
How would you do this problem by hand and on a calculator (If possible).
Types of digital cameras are equal, is there evidence of a difference in the mean battery life between the two types of digital cameras at the 95% confidence level?
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution. Use a =.05 and .01 and perform a goodness of fit test.
A taste test has customers tasnte two types of cola drinks and asks which is preferred. An analyst then finds the sample proportion p who prefer Brand 1.
messages are transmitted from low speed terminals and arrive at a message concentrator at a poisson rate of 600hr.
a music teacher had noticed that some students went to pieces during exams. he wanted to test whether this performance
An economist wishes to estimate the average family income in a certain population. The population standard deviation is known to be $4,500, and the economist uses a random sample of size = 225.
Assume that the samples are normally distributed with equal population variances. Refere to the sales volume data in the table below, what is the number of degree of freedom? Top Shelf Sales Volume 23 35 50 68 32 Bottom Shelf Sales Volume 55 70 72..
What is the procedure involved in performing hypothesis tests and discuss the business uses of time series forecasting.
Find the 95% confidence interval for the unknown population mean.
QUESTION 1: To identify the point in a distribution at which 50% of scores fall above and 50% fall below a given score, which measure of central tendency would you report?
What is the probability that on your next trip to your friend's house, you will have to stop for exactly one red light and what is the probability that you will have to stop for at least one red light
(a) Write out the probability distribution function of X. (b) Compute the probability that an even number is rolled. (c) Compute the expectation and variance of X.
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