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Fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy. Higher scores indicate stronger fine motor skills. The data are presented below. Is there evidence of a change in fine motor skills? Use a 5% level of significance. Make sure to 1. Give the null and alternative hypotheses, 2. Calculate the test statistic, and 3. give the conclusion (including a comparison to alpha or the critical value).
suppose we want to determine the binomial probabilityp of getting 4 heads in 15 flips of a 2-sided coin.nbsp using
A statistics practitioner working for major league baseball determined the probability that the hitter will be out on ground balls in 0.75. In a game where there are 20 ground balls, find the probability that all of them were outs.
An important idea in data interpretation is choosing which graph to use under which circumstances. Describe the benefits of different graphs for different sets of data:
estimate the means of the populations from which samples were drawnavoid the assumption of homogeneity of
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
Her mean waiting time was 7.4 minutes. Assume that the standard deviation has been historically known to be 2.2 minutes. At the .05 significance level, test the claim that the mean waiting time is less than 10 minutes.
What is the inherent meaning and justification of cross multiplication as it applies to solving an equality? Is | x -2 | the same as | 2 - x |? Please explain your answer. How do you express the following mathematically?
Clothing for Runners: Your company sells exercise clothing and equipment on the internet. To design the clothing, you collect a data on the physical characteristics of you different types of customers
assume that the mean sat score in mathematics for 11th graders across the nation is 500 and that the standard deviation
Separately choose at random 2 of those under 21 to interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed: what is that chance?
That's a much larger sample than standard sample surveys. In spite of this, we can't trust the result to give good information about any clearly defined population. Why?
for the following z-acoresm determine the percentage of scores that lie beyond z show workingstandard
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