A variable contains five categories. It is expected that data areuniformly distributed across these five categories. To test this, asample of observed data is gathered on this variable resulting infrequencies of 27, 30, 29, 21, and 24. Using a = .01, the critical valueof chi-square is _____.O 7.789.2413.28O 15.4815.09

Given, the number of categories (k) is 5.

Answered: A variable contains five categories. It…

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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The duration (in minutes) for a sample of 20 flight-reservation telephone calls is shown in the following table: 2.1 10.4 4.8 5.5 4.5 2.8 5.9 10.5 4.8 3.3 5.8 6.6 7.5 4.8 5.5 3.5 5.3 3.6 7.8 6.0 NOTE: Ex=111 and x = 709.82 Assuming the population has a normal distribution, find a 95% confidence interval for the population mean time.
The last digit of the heights of 58 statistics students were obtained as part of an experiment conducted for a class. Use the following frequency distribution to construct a histogram. What can be concluded from the distribution of the digits? Specifically, do the heights appear to be reported or actually measured? Digit Frequency 0 15 1 5 2 3 4 3 23456789 13 A w war w 5 3 3 4 Choose the correct histogram below. A. O B. C. D. 32- 16- 16- 0 1 2 3 4 5 6 7 8 9 Laba 0 1 2 3 4 5 6 7 8 9 32- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 Are the data reported or measured? OA. The data appears to be measured. The heights occur with roughly the same frequency. B. The data appears to be reported. Certain heights occur a disproportionate number of times. C. The data appears to be measured. Certain heights occur a disproportionate number of times. D. The data appears to be reported. The heights occur with roughly the same frequency.
A random sample of people were asked how old they were when they first met their partner. The histogram represents this information. 8 7 6 5 1 10 20 30 40 50 60 70 80 90 100 age (years) A Figure 2.14 (i) What is the modal age group? (ii) How many people took part in the survey? (iii) Find an estimate for the mean age that a person first met their partner. (iv) Draw a cumulative frequency graph for the data and use the graph to provide an estimate for the median. frequency density (people per year)
A boat capsized and sank in a lake. Based on an assumption of a mean weight of 133 Ib, the boat was rated to carry 70 passengers (so the load limit was 9,310 Ib). After the boat sank, the assumed mean weight for similar boats was changed from 133 lb to 174 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 70 passengers, and assume that the weights of people are normally distributed with mean of 181.1 Ib and a standard deviation of 38.6 lb. Find the probability that the boat is overloaded because the 70 passengers have mean weight greater than 133 lb The probability isO: (Round to four decimal places as needed.) b. The boat was later rated to carry only 17 passengers, and the load limit was changed to 2,958 Ib. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 174 (so that their total weight is greater than the maximum capacity of 2,958 Ib). The probability is. (Round to four decimal places as needed.)…
Refer to the accompanying data set and use the 30 screw lengths to construct a frequency Begin with a lower classlimit of 3.720 in., and use a class width of 0.010 in. The screws were labeled as having a length of 3 3 / 4 in. 1 Click on icon to view the data. Complete the frequency distribution below. Length (in.) Frequency 3.720 − − − − − (Type integers or decimals rounded to the nearest thousandth as needed.) 1: Data Table Screw Lengths (inches) 3.765 3.757 3.741 3.755 3.736 3.746 3.756 3.722 3.755 3.758 3.754 3.744 3.743 3.735 3.753 3.755 3.737 3.736 3.741 3.742 3.742 3.766 3.753 3.759 3.748 3.736 3.758 3.751 3.752 3.748
The researchers used a 3-item 7-point scale to measure consumers' attitudes toward the company. The researchers most likely used the .as the indicator of the scale's quality/reliability. none of the above/below O coefficient alpha coefficient beta coefficient p
Examine the frequency distribution. What is the width of a class in this frequency distribution? Enter your answer as a number, like this: 42
Q1-5: Given the following data from a sample of sizen= 7 12 7 49073 The third qoartile is: Select one: O a. 4 O b. 7 O c. 8 O d. 9
An analysis of variance produces SSbetween = 30, SSwithin = 60, and an F-ratio with df = 2, 15. For this analysis, what is the F-ratio? Question 14 options: 30/60 = 0.50 60/30 = 2.00 15/4 = 3.75 4/15 = 0.27
Listed below are the measured radiation absorption rates (in W/kg) corresponding to 11 cell phones. Use the given data to construct a boxplot and identify the 5-number summary. 1.16 0.61 0:87 1.27 1.46 0.73 1.09 1.04 1.48 0.52 0.63 The 5-number summary is and all in W/kg. (Use ascending order. Type integers or decimals. Do not round.)
Please explain throughly
Listed below are the measured radiation absorption rates (in W/kg) corresponding to 11 cell phones. Use the given data to construct a boxplot and identify the 5-number summary. 1.11 0.97 0.64 0.91 1.07 0.61 1.49 0.71 1.47 0.54 1.05 D The 5-number summary is..D. and (Use ascending order. Type integers or decimals. Do not round.) all in W/kg.

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