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The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight.
a. 10th percentile b. 32nd percentile c. 75th percentiled. 90th percentile e. 99.9th percentile f. 99.99th percentile
Psychologists once measured 77 variables on a sample of schizophrenic people and a sample of people who were not schizophrenic. They compared the two samples using 77 separate significance tests.
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
Suppose 72% of the drivers regularly use seat belts. You take a random sample of 10 of these drivers. What is the probability that the number regularly using seat belts is at least 7?
Suppose that 20% of all Internet users have posted photos online. A sample survey interviews 1555 users. What is the probability that 300 or fewer people in the sample have posted photos online?
A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control.
The password of 52 digit sequence is made. It consists of 0 and 1. How various different possibilities exist for networks password.
Determine the 95% confidence interval for true percent of car owners in this city who received the speeding ticket this year. Explain your results to nearest hundredth of percent.
Computing the probability values using normal distribution - Evaluate the percentage of homes that generate between 27 and 31 pounds of recycling per month.
As part of its testing program, LongLast tests a sample of 25 batteries. What is the standard error of the mean?
Pools sells above ground model for 'p' dollars each. The monthly revenue from the sale of the pool is given by
A random sample of 15 first-year CMAs in Denver produces a mean salary of $32,279, with a standard deviation of $1,797. Test the hypothesis that the mean for all Denver first-year CMAs is not equal to $31,129. Use the .05 level of significance.
Misery loves company. It is time for the PE (professional engineer's exam). The results of the national test were normally distributed around the mean score of 70.
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