Does the histogram appear to depict data that have a normal distribution?O A. The histogram does not appear to depict a normal distribution. The frequencies generally increase and thehistogram is roughly symmetric.O B. The histogram appears to depict a normal distribution. The frequencies generally increase to a maximum andthen decrease, and the histogram is roughly symmetric.OC. The histogram appears to depict a normal distribution. The frequencies generally decrease to a minimum andthen increase.O D. The histogram does not appear to depict a normal distribution. The frequencies generally decrease to a minimumand then increase, and the histogram is roughly symmetric. The table below shows the frequency distribution of the weights (in grams) of pre-1964 quarters.Choose the correct histogram below.Weight (g)FrequencyO A.20-6.000-6.049115-10-6.050-6.09936.100-6.14975-6.150-6.199120-66.200-6.249116.16.26.36.4Weight (grams)6.250-6.2996.300-6.3496.350-6.399115-10-Use the frequency distribution to construct a histogram. Does the histogram appear to depict data that have a normal distribution?5-Why or why not?0-66.16.26.36.4Weight (grams)OC.10-5-0-6.16.26.36.4Weight (grams)B.FrequencyFrequencyFrequencyof

Weight Frequency 6-6.049 1 6.05-6.099 3 6.1-6.149 7 6.15-6.199 12 6.2-6.249 11…

Answered: Does the histogram appear to depict…

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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Students in a statistics class took their first test. The following are the scores they earned. Fill in the stem-and-leaf plot below use the tens place as the stem and the ones place as the leaf. Describe the shape of the distribution. 73 84 95 91 98 97 90 74 74 82 63 79 82 88 74 88 67 81 83 69 73 95 91 94 86 56 94 62 a) Data were collected for variable(s). Is it appropriate to make a stem-and-leaf plot for this type of data and number of variables? . b) Complete the stem-and-leaf plot below. You must put commas between the leaves. Stems Leaves 5 c) What shape is the stem-and-leaf plot above?
Members of the student council are seling bagels during each class period of the school day for a fundrasier. Yu-na made a scatter plot to see if there was a relationship between the class period and the number of bagels sold.Yu-na draws a line of best fit. Which of these lines is the best model for the data?
Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made the time period of January 1 to March 31. The table gives the defect and the number of defects. Do the data support the notion that each defect type occurs in the same proportion? Test at the 5% level. Number of Defective Lenses Defect type Number of defects Scratch 1866 Right shaped - small 1935 Flaked 1979 Wrong axis 1921 Chamfer wrong 1864 Crazing, cracks 1991 Wrong shape 2004 Wrong PD 1895 Spots and bubbles 1917 Wrong height 1885 Right shape - big 1875 Lost in lab 1886 Spots/bubble - intern 1935 State the hypotheses.H0: Each defect type in the same proportion.Ha: Each defect type in the same proportion. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to three decimal places.χ2 = Calculate the p-value. Round to four decimal places.p-value = State your decision.Since p-value 0.05,…
Several years ago, the state of California launched an aggressively advertisement campaign against smoking. We've interviewed students from 16 college campuses in California and recorded for each campus the percentage of students who claimed that they had encountered assay least one anti smoking advertisement on campus in the past month. Here are those percentages. 53 39 30 49 48 42 41 38 26 36 40 42 52 51 45 50 Construct a box and whisker plot for the data.
The data show the number of vacation days used by a sample of 20 employees in a recent year. Use technology to answer parts (a) and (b). a. Find the data set's first, second, and third quartiles. b. Draw a box-and-whisker plot that represents the data set. 1 5 4 3 6 0 5 3 4 5 3 1 10 7 8 6 1 2 89 a. Find the three quartiles. Q₁ = Q₂ = Q3 = (Type integers or decimals. Do not round.) b. Choose the correct answer plot below. Note that different technologies will produce slightly different results. O A. OB. Q Q C O C. Q
Use a calculator or computer software to generate a normal quantile plot for the data in the accompanying table. Then determine whether the data come from a normally distributed population. Click the icon to view the data set. Generate a normal quantile plot for the data. Choose the correct graph below. OA. 3.00 2.00- 1.00- 0.00- -1.00- Q Q -2.00 -3.00 100 200 300 400 500 0 X Value OB. 3.00 2.00- 1.00- 0.00- -1.00- -2.00- -3.00- ... 0 100 200 300 400 500 X Value Q Q G O C. 3.00 2.00 P 1.00 0.00- -1.00- -2.00- 0 100 200 300 400 500 X Value -3.00+ Determine whether the data come from a normally distributed population. Choose the correct answer below. OA. The distribution is not normal. The points are not reasonably close to a straight line. OB. The distribution is normal. The points show a systematic pattern that is not a straight-line pattern. OC. The distribution is not normal. The points show a systematic pattern that is not a straight-line pattern. OD. The distribution is normal. The…
Is the variable(foot print) below normally distributed or skewed? If skewed, indicate the direction. male shoe print #1 32.2 #2 30.1 #3 29.0 #4 31.8 #5 29.4
A professor went to a website for rating professors and looked up the quality rating and also the "easiness" of the six full-time professors in one department. The ratings are 1 (lowest quality) to 5 (highest quality) and 1 (hardest) to 5 (easiest). The numbers given are averages for each professor. Assume the trend is linear, find the correlation, and comment on what it Quality 4.6 Easiness O 3.8 4.7 3.2 means. 4.4 3.2 4.2 3.8 2.6 1.8 3.6 2.2 Calculate the correlation. 3D(Round to three decimal places as needed.)
A city wants to know if a new advertising campaign to make citizens aware of the dangers of driving after drinking has been effective. The accompanying table shows the number of drivers who have been stopped with more alcohol in their systems than the law allows for each day of the week in the week before and the week a month after the campaign starts. Assume that the data from each population is Normally distributed. Complete parts a through i below. A. Are the data paired? Explain. B. Compute the mean difference C. Compute the standard deviation of the differences. D. Compute the standard error of the mean difference. E. Find the value of the t-statistic. F. How many degrees of freedom does the t-statistic have? G. Is the alternative one- or two-sided? Explain. H. What is the P-value associated with this t-statistic? Assume that the other assumptions and conditions for inference are met.
The table shows total earnings, y (in dollars ), of a food x,0,1,2,3,4,5,6 y,0,18,40,62,77,85,113 a. Make a scatter plot. b. What type of correlation is shown in the gra
b. Calculate the range. Range= c. Calculate the interquartile range, IQR. IQR= d. State whether the distribution is symmetric, skewed left, or skewed right. Symmetric Skewed left Skewed right e. Would you expect the mean to be greater than, equal, or less than the median? Equal Greater than Less than

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