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Absolute Safety Training Paramedic Program Working on Practice Test

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Question Description

I’m working on a statistics question and need support to help me understand better.

  1. Find the Standard deviation of the data summarized in the given frequency table (15 pts.)

Time Frequency

40-49 8

50-59 44

60-69 23

70-79 6

80-89 107

90-99 11

10-109 1

2Assume that women’s weights are normally distributed with a mean of 143 lb and a standard deviation of 29 lb. If 16 women are randomly selected, find the probability that they have a mean weight between 150 lb and 155 lb

3 Based on Genetic Institute using the Microsort Method of gender selection among 726 babies born, 668 of these babies were girls and the others were boys. Use these results with a 0.05 significance level to test the claim that among babies born to couples using the Microsort Method, the proportion of girls is greater than the value of 0.5 that is expected with no treatment.(

  1. 4 Use the scatter plot and the linear correlation coefficient to determine whether there is a correlation between the two parameters. Use 0.05 significance level. (15 pts.)

X Y

1 3

0 1

5 15

2 6

3 8


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