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The frequencies of different blood types of 200 people who volunteered at a plasma center is given in the table.
Blood Type
O
A
B
AB
Total
frequency
82
80
20
18
200
Are these four blood types are equally likely? Use a=0.05
Identify the parameters
Null hypothesis
Alternative hypothesis
Test statistics
Rejection rage
Conclusion
Your company sells exercise clothing and equipment on the internet. To design the clothing, you collect data on the physical characteristics of your different types of customers.
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
Find the distribution of the test statistic when the null hypothesis is true, and then show how to get a test size alpha= 0.10
brian smith sells a set of movie posters 12 and baseball cards 8 at a local flea market. on last sunday brians total
based on the data set provided provide a substantive narrative explanation of the process involved in creating the
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How do you calculate a participant score if she was at the 67th percentile? I only have the standard deviation of the population and the mean. s = 27 x = 448.95
What is the probability of selecting a credit card customer at random and finding the customer charged between $70 and $83? compute the probability of charges less than $54.
List all possible combinations of opinions that can be held by students A, B, and C. (Hint: There are eight possibilities.) Then give the probability of each of these outcomes. Note that they are not equally likely.
Generate a testable null statistical hypothesis and an alternative statistical hypothesis. Select an alpha level of .05, .01, or .001 and justify your choice.
40 were in favor of the Independent candidate, and 140 were undecided. At a 1% level of significance, test to see if the proportion of voters has changed. Calculate the value of the Chi-Square Test Statistic for this problem. What is it?
researchers studied the effects of adding an exercise program to dieting in the achievement of weight loss. a sample of
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