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Fitting of simple linear regression equation.
A researcher wishes to determine whether a person's age is related to the number of hours he or she jogs per week. The data for the sample are shown below. Predict the number of hours jogged per week (provided there is a significant relationship) for a 50-year-old person.
Age x
34
22
48
56
62
Hours Jogged y
5.5
7
3.5
3
1
Calculate the standard error. With 95% confidence, find out the margin of error?
A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. Use the .01 significance level. Compute the p-value.
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
Suppose you were to cut up the directory and pull out one listing at random to contact.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
How large a sample is required to estimate the mean speed with a margin of error equal to 2 miles per hour with 90% confidence?
For an arch chosen at random in Arches National Park, use the preceding information to estimate the probability that the height of the arch poening is:
Compute cumulative probabilities for these numbers in second column. Then create a histogram illustrating data distribution. Using generated Normal probability table, determine probability of Pr(X
The trail was repeated 54 times with 22 correct identifications and 32 wrong identification.
The manufacturer of a coffee dispensing machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces and standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured, what is the possibility that- ..
Their resting heart rates were measured. A partial ANOVA table is given.
First-order regression model was fit to data. Part of printout follows?
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