C. nominald. ordinalQUESTION 4The distribution of scores of college students on a fifth grade math test would probably benormalO negatively skewedO positively skewedO symmetrical but not normalClick Save and Submit to save and submit. Click Save All Answers to save all answers.

A normal distribution is a continuous distribution in which the majority of the data is in the…

Answered: QUESTION 4 The distribution of scores…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Thanks. Why is Kathy's score considered better-is it because it is a posituve score? What does the Z score represent in this case?
ath ess Most Watched Ani... A pharmaceutical company claims their new diabetes medication results in less variance in a patient's glucose level than if the patient were on no medication at all. An endocrinologist wishes to test this claim. She divides participants randomly into two groups. Group A consists of 20 diabetics who received the medication; group B consists of 26 diabetics who received a placebo. After two weeks, the blood sugar level of each patient in each group was measured with the following results (in mg/dL): Group A: 77.8, 229.4, 199.9, 110.1, 180.2, 116.1, 139.7, 171.1, 37.4, 158.1, 88.4, 195.5, 246.1, 142.4, 178.1, 105.5, 179.6, 146.1, 78.8, 123.7 Group B: 124.5, 130.1, 136, 162.8, 113.4, 72.8, 142.6, 50.3, 179.8, 197, 230, 194.3, 171, 109.3, 114.4, 107.5, 114.7, 195.3, 127.7, 126.4, 85.6, 166.7, 182.3, 113.5, 216.7, 162.8 Ho: Perform a hypothesis test using a 6% level of significance to test the pharmaceutical company's claim. Step 1: State the null and alternative…
Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What can you say is most likely true about GPAs in our class?
QUESTION 9 The median of a set of data is more representative than the mean when the mean is larger than most of the observations. O True O False
Question 11 A sample of adults was asked to indicate the amount of money, in dollars, they would be willing to spend on a wedding gift. When a histogram was constructed based on the responses given by each adult, most of the dollar amounts were on the larger side, with only a few dollar amounts on the smaller side. Two measures of center were calculated for this sample: $150 and $279. One of these measures is the mean, and the other is the median. Which measure must be the mean? The mean is $279 because the distribution of dollar amounts would be skewed to the left. The mean is $279 because the distribution of dollar amounts would be skewed to the right. The mean is $150 because the distribution of dollar amounts would be skewed to the left. The mean is $150 because the distribution of dollar amounts would be skewed to the right.
A study was undertaken to see how accurate food labeling for calories on food that is considered reduced calorie. The group measured the amount of calories for each item of food and then found the percent difference between the measured and labeled amount of calories. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. Do the data indicate that at least one of the mean percent differences between the three groups is different from the others? The data is summarized in the table below. National Mean Standard Deviation Sample Size Local -2.1 Regional 27.1667 143.125 Fill in the hypotheses below: Ho: Select an answer Ha: Select an answer 10.3257 20.797 53.5922 20 12 8
2. A distribution of test scores is represented on a box-and-whisker plot and the resulting shape is onethat is negatively skewed. What details from this plot would support this conclusion? Please answer this question in detail.
One study found a negative correlation between participant’s age and hours of sleep they got (as they got older, they slept less). Which additional fact would lead you to believe that the relationship between age and hours of sleep is one of causation and not correlation? Jim is 63 and sleeps more than he did when he 47. Josie is 40 and sleeps fewer hours than when she was 30. The participants were randomly selected, the sample size was large, and the participants did not know the goal of the study. Jennie sometimes has difficulty sleeping.
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the next 3 questions concern the results of a survey of 18,000 adults between 20 and 64 years of age. Respondents were asked to indicate whether they would endorse a public health initiative. After data were collected, the distribution of the probability of endorsing the initiative was assessed.The distribution was judged to be roughly positively skewed Four potential plots of these data are presented below (only one is correct):9. If the survey included all adults aged 18+, one more category would be inserted at the low end of the age range. What would it be? d. 18-20c. 18-19b. 15-20a. 15-19
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QUESTION 4 The distribution of scores of college students on a fifth grade math test would probably be normal negatively skewed positively skewed symmetrical but not normal