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Milk Consumption You are performing a study about weekly per capital milk consumption. A previous study found weekly per capital milk consumption to be normally distributed, with a mean of 48.7 fluid ounces and a standard deviation of 8.6 fluid ounces. You randomly sample 30 people and record the weekly milk consumption shown below. $$\begin{array}{ccccccccccccccc}40 & 45 & 54 & 41 & 43 & 31 & 47 & 30 & 33 & 37 & 48 & 57 & 52 & 45 & 38 \\65 & 25 & 39 & 53 & 51 & 58 & 52 & 40 & 46 & 44 & 48 & 61 & 47 & 49 & 57\end{array}$$ (a) Draw a frequency histogram to display these data. Use seven classes. Do the consumptions appear to be normally distributed? Explain. (b) Find the mean and standard deviation of your sample. (c) Compare the mean and standard deviation of your sample with those of the previous study. Discuss the differences.
Normal Probability Distributions
Introduction to Normal Distributions and…
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Craig West
Numerade educator
Suppose y=mx+2 , where m is any constant. For x=n and y=10 , the equation is satisfied. Find the value of y when x=2n .
Steven Clarke
If the mean of seven numbers is 500 and the numbers are 453,521,517,459,501,569, and x , then find the value of the unknown number x .
Benjamin Densmore
thoughtful
The cost, C , in dollars for Crystal City Tours to provide a tour for x people can be determined by the equation C=200+2.75x . What is the meaning of 2.75 in this context? Group of answer choices The number of persons in the tour who are willing to pay $200 . The approximate change in the number of persons in the tour with the increase in the cost for Crystal City Tours in dollars. The additional cost of each person with a fixed cost of $200 . The approximate increase in the cost for Crystal City Tours in dollars for each new person in the tour.
2(w+3)+2w=34 In the above given equation, what is the value of w? −7 7 −3 3
20-year-old Jimmy has an opportunity to invest some money in a stock that returns 10% annually. He invests $5,000 today in that stock. How much does this amount will be worth when he retires at the age of 50? 5,000(1.10)^50 5,000(1.10)^30 5,000(1.01)^50 5,000(1.10)^20
Gaurav Kalra
l: 1.5x+2.5y=4 m: 0.75x+y=4 The y-coordinate of the intersection of the given lines, l and m, drawn on the xy-plane is? −8 4 8 −4
200,000 people used to visit a certain National Museum every month till Jan 2020. However, due to a sudden decline in public travel and a rise in information flow, the number of people visiting the museum in the coming months is reducing by half of its number from the previous month. The function h(x) represents the number of people who will visit the museum x months after Jan 2020. Which of the following statements describes the function h(x) ? The function h(x) is a periodic function. The function h(x) is a linear function. The function h(x) is an exponential function. The function h(x) is a constant function.
Lien Le
The points (3,0) and (2,b) lie on a straight line on the xy -plane. Find the possible equation of this line? y=−bx+3b y=bx−3b y=−bx−3b y=bx+3b
Reply Percentage replied Definitely 45.5 Depends on pricing 25.3 Not everything 15.2 No 14 Based on a poll on a social media platform, users were asked if they would love to order healthy food online, which costs a little more, in order to have a better body mass index. Based on the given table, the probability of a user replying “Definitely” given that the user did not reply “Depends on pricing” is close to ? Group of answer choices 0.55 0.60 0.45 0.75