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Scenario A: You read in a report that preschool-aged children have on average 5.2 books at home. You are concerned that children in your community have fewer books.
1. Consider Scenario A. State whether you made a Type I error, a Type II error, or the correct conclusion.
a. Children in your community have on average less than 5.2 books at home, and you reject the hypothesis that they have greater than or equal to 5.2 books.
b. Children in your community have on average less than 5.2 books at home, and you fail to reject the hypothesis that they have greater than or equal to 5.2 books.
c. Children in your community have on average greater than or equal to 5.2 books at home, and you reject the hypothesis that they have greater than or equal to 5.2 books.
Explain the difference between independent samples and dependent samples. Classify the following as independent or dependent samples:
Randomly sample one person from a population of 100 people: 50 children, 20 teens, and 30 adults. What is the probability that your selectee is a child.
Disjoint or independent? In Exercise you calculated probabilities of getting various M&M's. Some of your answers depended on the assumption.
Determine the value of test statistic z using z = ^p-P ^pq/n. Claim is that proportion of drowning deaths of children attributable to beaches is more than 0.25, and sample statistics.
First National Bank employs three real estate appraisers whose job is to establish a property's mark et value before the bank offers a mortgage.
Calculate and interpret a 99% confidence interval for the difference between true means. Is uoride toothpaste beneficial?
At the .05 significance level, can we conclude that there is a difference in their mean times?
Find out the variance for percentage of tickets? Determine the probability that your sample will have the average between 70 and 75?
for the final days before the election the campaign manager has a total of 34000 to spend on tv and radio campaign
in a survey of 100 business executives 60 per cent were male and 40 per cent were female. 70 per cent of the male
Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about the environment.
Two researchers are both interested in the relationship between caffeine consumption and activity level for elementary school children. Each obtains a sample of n = 20 children.
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