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Let p_1 be the proportion of successes in the first population and let p_2 be the proportion of successes in the second population. Suppose that you are testing the hypotheses:
H_0:p_1-p_2=0 \ H_a:p_1-p_2 neq 0
Futhermore suppose that z^*=1.73, find and input the p-value for this test. Round your answer to 4 decimal places.
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
A university wants to determine the proportion of students who use a cash card to pay at the university food service. Out of 100 students surveyed, 65 students use a cash card. Estimate the value of the population proportion.
computing the probability values using normal distribution.information from the department of motor vehicles indicates
Can the formal hypothesis testing approach be used for nonparametric tests? How are parametric and nonparametric statistics different?
From the test data, can we determine whether the oven has an effect on the cake's density? The null hypothesis should be: Oven has no effect on density.
Distribution in Research simulation located on your student website. During the third cycle of the simulation, you need to make a decision about buying machinery.
Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.
Calculate the difference scores and find MD for the following data from a repeated-measures study. The data below are from an independent-measures experiment comparing three different treatment conditions.
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. a) What is the probability of completing the e..
the research team to identify if accounts with larger balances consistently take advantage of their additional services. Formulate a hypothesis statement regarding our research issue.
1.a refrigerator contains 6 apples 5 oranges 10 bananas 3 pears 7 peaches 11 plums and 2 mangos. imagine you stick your
If we fit the least-squares line to the 12 data points (one for each month) we obtain the following results from a software package. Notice that temperature is taken as the explanatory variable and crawling age as the response.
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