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A sample of 163 randomly selected students, found that the proportion of students planning to travel home for thanksgiving is 0.72. What is the standard deviation of the sampling distribution?
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.06
The probability that a teenager will fall in love is p = .72. The probability that a student will play a sport is p =.55.
Researchers would like to know whether the proportions of elementary school children who are obese differ in rural and urban areas.
The principal randomly selected six students to take an aptitude test. Their scores were: 76.5 85.2 77.9 83.6 71.9 88.6. Determine a 90% confidence interval for the mean score for all students.
to test for a disease that has a prevalence of 1 in 100 in a population blood samples of 10 individuals are pooled and
Two different designs for a solar energy collector were tested with the following results. The measured response was power (in watts).
edward and his friends cannot go outside when it is sunny because they are vampires. edwards hometown forks washington
Two distributions. If two distributions have exactly the same mean and standard deviation, must their histograms have the same shape?
1. Construct a scatter plot 2. Find the value of the linear correlation coefficient r. 3. Find the critical values of r from attached table (see attachment). Use α = 0.05
Using the miles in the bottom of this page use the Descriptive statistics function in Excel to summarize the following statistics for Miles Driven:
a researcher is testing a possible carcinogen on mice. he chooses 8 mice at random from a batch of 13 mice. unknown to
Give a 95% con?dence interval for the average caloric content of a 3-ounce cut of top loin steak. Also give a 98% con?dence interval for the average caloric content of a cut.
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