Bighorn sheep are found in the mountainous western United States.  In the following data, x = the age of bighorn sheep in years and y = the percentage of that age group that die during the course of a year (mortality rate).  In the table below, when x = 5, y = 20 meaning that 20% of the sheep aged between 5 and 6 years old die.  A random sample of sheep provided the following information: x 1 2 3 4 5 y 14 18.9 14.4 19.6 20   ∑ x = 15 ; ∑ y = 86.9 ; ∑ x 2 = 55 ; ∑ y 2 = 1544.73 ; ∑ x y = 273.4   Find the regression equation.  Fill in the blank: ŷ = ______ in the form ŷ = mx + b.

Step 2: Interpret this data.

Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: Female: 69 89 55 95 98 67 55 58 61 57 63 56 55 78 61 64 81, 92 86 89 67 85 88 92 74 92 93 79 78 71 Find the means. The mean for males is 67.8 beats per minute and the mean for females is 82.1 beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Find the medians. The median for males is 61 beats per minute and the median for females is 85 beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Compare the results. Choose the correct answer below. OA. The mean is lower for males, but the median is lower for females. OB. The median is lower for males, but the mean is lower for females. O C. The mean and the median for females are both lower than the mean and the median for males. OD. The mean and the…

Bighorn sheep are found in the mountainous western United States.  In the following data, x = the age of bighorn sheep in years and y = the percentage of that age group that die during the course of a year (mortality rate).  In the table below, when x = 5, y = 20 meaning that 20% of the sheep aged between 5 and 6 years old die.  A random sample of sheep provided the following information: x 1 2 3 4 5 y 14 18.9 14.4 19.6 20   ∑ x = 15 ; ∑ y = 86.9 ; ∑ x 2 = 55 ; ∑ y 2 = 1544.73 ; ∑ x y = 273.4   find m for this data

The following two-by-two table was created from the data.   WAKE UP DURING THE NIGHT   GENDER Yes No TOTAL Female 125 25 150 Male 91 30 121 TOTAL 216 55 271 What is the risk (probability) of waking up during the night if you are a female? What is the risk (probability) of waking up during the night if you are a male? What is the relative risk (risk ratio) of waking up during the night if you are a female as compared to a male? State your finding in plain language:

he accompanying data are x = advertising share and y = market share for a particular brand of cigarettes during 10 randomly selected years. x 0.103 0.073 0.071 0.077 0.086 0.047 0.060 0.050 0.070 0.052 y 0.132 0.126 0.122 0.086 0.079 0.076 0.065 0.059 0.051 0.039 (a) Calculate the equation of the estimated regression line. (Round your answers to six decimal places.)y =        Obtain the predicted market share when the advertising share is 0.09. (Round your answer to five decimal places.)(b) Compute r2. (Round your answer to three decimal places.)(c) Calculate a point estimate of ?. (Round your answer to four decimal places.)On how many degrees of freedom is your estimate based?

Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: Female: 81 57 61 80 71 91 63 61 85 77 88 64 59 53 86 54 96 60 82 67 70 85 81 91 84 78 86 69 65 79 Find the means. The mean for males is beats per minute and the mean for females is (Type integers or decimals rounded to one decimal place as needed.) beats per minute.

The Variance of Population for the following data:X = 155, 175, 125, 155, 175, %3D 195, 185, 525, 255, 425, 355, 455 is : * O 19350 O 15403 O 18600 O 17400

The figure shows population density (people per square mile) for all states of a certain country. The states are divided into four geographical regions: A, B, C, and D. Answer the questions below. D- 0 100 200 300 400 500 600 700 800 900 1000 1100 People per Square Mile Why is it best to compare medians and interquartile ranges for these data, rather than comparing means and standard deviations? OA. These data are fairly symmetric and do not have outliers, and the median and interquartile range provide more reliable information in these circumstances. B. Some of these data have outliers and/or are skewed, and the median and interquartile range amplify the effects of outliers and skewness. OC. Some of these data have outliers and/or are skewed, and the median and interquartile range are resistant to outliers. OD. Some of these data have vastly different centers, and the median and interquartile range provide more reliable information in these circumstances. List the approximate median…

All of the following are descriptive statistics EXCEPT a. independent samples t-testb. medianc. variance d. frequency tables