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A die is rolled twice. What is the probabilty that the sum of the faces is greater than 7, given that:
(a) the first outcome was a 4?
(b) the first outcome was greater than 3?
(c) the first outcome was a 1?
(d) the first outcome was less than 5?
To find z-score and required probabilities based on Normal distribution. Assume that childrens weekly allowances are normally distributed in the population.
multiple choice questions based on regression.a regression and correlation analysis resulted in the following
What is the equation for least squares line? Calculate the coefficient of determination.
A Leading Candy bar is claimed to have, on average,
The daily revenue totals for the next 30 days will be monitored. What is the probability what the mean daily revenue for the next 30 days will exceed $7500?
Using the information provided in part (d) would you be surprised if a sample of 50 differences collected in this way resulted in a higher mean number of unpopped kernels for the store brand than for the name brand?
Explain clearly why the matched pairs t test is the proper choice and do a complete analysis for the question that is posed here.
Completion of today's paper. If X denotes the number of papers belonging to seniors among those checked, will X have a binomial distributuin?
This is an Excel sheet that calculates both probabilities and percentiles for any normal or standard normal probability distribution. Replaces normal probability tables.
A company that produces an expensive stereo component is considering offering a warranty on the component. Suppose the population of lifetimes of the components is a normal distribution with mean of 84 months and standard deviation of 10 months.
A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true proportion of families who own at least on DVD player.
You are given the choice of three doors. Behind one is a new car and the others hide a barnyard animal for you to keep. After you choose door number one, your host (Monty) opens door three to reveal a goat.
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