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For each class interval of the frequency distribution given, determine the class midpoint, the relative frequency, and the cumulative frequency.
Class Interval
Frequency
20-under 25
17
25-under 30
20
30-under 35
16
35-under 40
15
40-under 45
8
45-under 50
6
Complete the test at the 5% level of significance.
In an Urn containing 12 balls numbered from 1 to 12. The balls are identical. What is the probability that the number of the selected ball is less than or equal to 5?
Probability of 0.3, and is a draw with probability of 0.3, independently of the previous games. What is the probability that Fischer wins the match?
the point of averages of a scatterplot of y against x is 14 1 . the sd of x is 6 and the sd of y is 7. the decimal
A seed distributor claims that 80% of its beet seeds will germinate. How many seeds must be tested for germination in order to estimate p, the true proportion that will germinate, so that the maximum error of the estimate is " = 0:03 with 90% con ..
The mean television viewing time for Americans is 15 hours per week (Money, November 2003). Suppose a sample of 40 Americans is taken to further investigate viewing habits.
Describe the types of probability -example of classical probability, empirical probability, or subjective probability.
You do not need to collect data and actually conduct the test calculations. Rather,state the claim, define the null and alternate hypotheses, identify the test significance and the test statistic, and state the decision rule that will be used.
Determine what analysis would you do on each problem (ie, one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
Derive rules to test whether a number is divisible by N, where N ranges from 2 to 13. E.g. A number is divisible by 3 if the sum of the digits is divisible by 3.
He received a score of 70 on a biology test for which the class mean was 70 with standard deviation of 4. On which test did he do better relative to the rest of the class?
Insurance policies ever have to pay out. You decide to test his claim at the a=0.1significance level. With a critical value of -2.33, compute the sample statistic.
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