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The mean and standard deviation on a calculus mid term are 61 and 13 points while they are 65 and 19 on the final. If a student gets 77 points on the midterm, what is the comparable grade on the final?
1.a newspaper conducted a statewide survey concerning the 2000 race for state senator. the newspaper took a random
A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal.
Explain why comparing children whose parents chose a Montessori school with children of other parents would not show whether Montessori schools perform better than other programs?
A restaurant claims that its speed of service time is less than 18 minutes. A random selection of 36 service times was collected, and their mean was calculated to be 17.1 minutes.
The lifetime of a color television picture tube is normally distributed with a mean of 7.8 years and a standard deviation of 3 years. What is the probability that a picture tube will last more than ten years?
When the level of confidence and the sample size remain the same, a confidence interval for a population mean µ will be wider, when the sample standard deviation s is small than when s is large.
the central limit theorem can be used to analyze round-off error. suppose that the round-off error is represented as a
two prison inmates communicate in binary by tapping on the adjacent wall. suppose that the probability of receiving a
The standard deviation of the population is 200. Which of the following is the 90% confidence interval for the mean number of apples for all trees?
A survey of 100 clients of pacific gas and electric resulted in the following frequency distribution of monthly charges.
question acid rain has caused many lakes to become more acidic. a lake is considered nonacidic if the ph level is
nine college students had eaten the following number of times at a fast food restaurant for dinner in the last ten
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