In the following data, is the average number of hours the student spent working on math each week andy is the final grade in a math class.hours/weekXSubmit Question888991011141619Gradey69.256.258.271.669.66864.491.687.494.6The line of best fit is y = 3.15 x + 37.77.What is the predicted value for the final grade when a student spends an average of 7 hours each week onmath?Grade =Round to 1 decimal place.

The objective of this question is to find the predicted value for the final grade when a student…

Answered: In the following data, is the average…

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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1. The manager of Jerry's Barbershop recently asked his 50 customers to punch in a timecard when first arrive at the shop and to punch out right after they paid for their haircut. He then used the data on the cards to measure how long it took Jerry and his barbers to cut hair and used that information to schedule their appointment intervals. The following times (in minutes) were tabulated. 15 19 20 22 23 24 25 28 28 28 28 29 30 30 30 31 31 32 32 34 35 35 35 35 35 37 37 37 37 38 40 42 42 45 45 45 48 50 50 50 50 51 51 51 52 52 52 54 55 84
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. 11.8 8.1 7 3.7 2.7 2.8 2.6 0.4 14.3 11 10.1 7.1 6.1 6.2 6.4 4.6 I = thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the equation y = 0.87x + 3.98. Use this equation to answer the following: Special Note: I suggest you verify this equation by performing linear regression on your calculator. A) How many murders per 100,000 residents can be expected in a state with 6.2 thousand automatic weapons? Answer = Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 2.4 thousand automatic weapons? Answer = Round to 3 decimal places. Hint: Help Question Help: 9 Message instructor 田 @ 3 16
Use the following data to answer the following questions. You can use excel or any app. as calculator.46 93 5630 39 4524 48 4560 55 4547 62 7063 72 6145 72 6574 48 6373 55 4872 55 44 1. The 8th decile is __________. a. 70.50 b. 71.60 c. 24.80 d. 37 2. The 57th Percentile is __________. a. 50.56 b. 60.73 c. 58.68 d. 48.79 3. The Mean Absolute Deviation is __________. a. 11.65 b. 10.72 c. 10.93 d. 11.62 4. The variance is __________. a. 213.592 b. 214.615 c. 231.516 d. 221.295 5. The standard deviation is __________. a. 14.65 b. 15.216 c. 14.615 d. 14.876
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. I 11.7 8 6.8 3.6 2.3 2.5 2.5 0.4 y 13.7 11 9.8 I= thousands of automatic weapons 7.4 6.2 6.2 4.2 y = murders per 100,000 residents This data can be modeled by the equation y = 0.84x + 4.11. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. Use the equation with the values rounded to two decimal places to make your predictions. A) How many murders per 100,000 residents can be expected in a state with 8.5 thousand automatic weapons? Answer = Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 2.8 thousand automatic weapons? Answer Round to 3 decimal places.
Use a stem-and-leaf plot to display the data, which represent the numbers of hours 24 nurses work per week. Describe any patterns. 40 42 48 32 40 30 23 40 36 40 Key: 313=33 Hours worked 2 3 4 5 Determine the leaves in the stem-and-leaf plot below. 50 32 36 40 35 38 49 What best describes the data? 40 36 36 40 33 40 32 OA. Most nurses work over 40 hours per week. OB. Most nurses work under 40 hours per week. OC. Most nurses work between 40 and 50 hours per week, inclusive. OD. Most nurses work between 30 and 40 hours per week, inclusive.
Please do in steps.
The dot plot below shows the length of service in years of Generation Y employees of The Millennial Company. Which of the following statements IS NOT TRUE?A. There are 4 employees whose length of service is lesser than the 3rd quartile (of the length of service data).B. The median length of service, in years, of Generation Y employees is 8.C. There are 4 employees whose length of service is greater than the 3rd quartile (of the length of service data).D. There are 2 employees with 10 years of service in the company.The longest length of service among Generation Y employees of The Millennial Company is:A. 4 yearsB. 8 yearsC. 10 yearsD. 16 yearsThe mode of the length of service in years of Generation Y employees is:A. 4 yearsB. 7 yearsC. 8 yearsD. 12 years
One way to measure a person's fitness is to measure their percentage of body fat. Average body fat percentage varies with age, but according to certain guidelines, the normal range for men is 15-20% body fat, and for women, 20-25%. The sample data comes from a group of men and women who exercised in a gym three times a week for one year. His trainer then measured his body fat. The data is shown in the following table. Determine the descriptive statistics of the sample. Does the sample have a normal distribution? Explain why. State the statistical hypotheses: H0 and HA. Determine the α Is this test one or two tailed? What statistical conclusion did you reach regarding the question being evaluated? GroupingBody Fat Percentages Men 13.3 6 20 8 14 19 18 25 16 24 15 1 15 Women 22 16 21.7 21 30 26 12 23.2 28 23
Q12
2 The accompanying data set lists diastolic blood pressure measurements (mm Hg) of females. All of the values are even numbers. Construct a stemplot. Identify the two values that are closest to the middle when the data are sorted in order from lowest to highest. (These values are often used to find the median.) 70 68 80 80 66 70 74 90 80 90 64 D 66 88 70 62 78 70 66 76 72 72 72 Construct the stemplot. Time Remaining: 01:17:13 Next MacBook Air C F11 F6 F2 W Textbook Statcrunch < Previous 80 F3 #3 E 54 $ Q F4 70 R 88 27 50 % 9 F5 T A 6 Y & 7 ♡ F7 U * 8 DII F8 ( 9 F9 0 ) A A F10 P L { + " 4) F12 باب 3 delete
The data in the figure below represents the number of stars earned by 140 performers in a talent competition.How many performers earned exactly 0 stars? (be careful... the y-axis represents the PERCENTAGE of the total number of performers. Ex: 30% of 140 would = 140 * 0.30 = 42)
A high school teacher at a small private school assigns trigonometry practice problems to be worked on via the net. Students must use a password to access the problems, and the time of log-in and log-off is automatically recorded for the teacher. At the end of the week, the teacher examines the amount of time each student spent working on the assigned problems. The data is provided below in minutes. Determine Mean, Median and Mode. 15 28 25 48 22 43 49 34 22 33 27 25 22 20 39

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