Can you help me with this question please Exhibit (i)The following data show the number of hours worked by 200 statistics students.Number of HoursFrequency0-94010 - 195020 - 2930 - 397040Refer to Exhibit (i).1.a) The class width for this distributionb). The number of students working 19 hours or less2. i) Find the critical value for two tailed test with a=0.02ii) Find area under the standard-normal distribution curve to right of z = -1.243. You hypothesize that people who eat junk food will have higher scores on a "healthproblems" survey (u = 60, o = 8). Random sample of junk food eaters ( n = 25) complete thehealth problems survey, and they obtain an average score of 62.7. Determine the Z score forthis sample mean4. A simple random sample of 16 observations from a normal population resulted in a samplemean of 17.25 and a sample standard deviation of 3.3. Develop a 95% confidence interval forthe population mean. (Z=1.64)The price of lunch at the mall has a mean of $5.00. The standard deviation is $1.50. Find thefollowing.5. Probability of spending less than $5.62Z-score:P(xs5.62):

Name: Can you help me with this question please Exhibit (i)The following dat
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Description: Can you help me with this question please Exhibit (i)The following data show the number of hours worked by 200 statistics students.Number of HoursFrequency0-94010 - 195020 - 2930 - 397040Refer to Exhibit (i).1.a) The class width for this distribution

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Exhibit (i) The following data show the number of hours worked by 200 statistics students. Number of Hours Frequency 0-9 40 10 - 19 20 - 29 30 - 39 50 70 40 Refer to Exhibit (i). 1.a) The class width for this distribution b). The number of students working 19 hours or less 2.i) Find the critical value for two tailed test with a=0.02 ii) Find area under the standard-normal distribution curve to right of z = -1.24 3. You hypothesize that people who eat junk food will have higher scores on a "health problems" survey (p = 60, o = 8). Random sample of junk food eaters ( n = 25) complete the health problems survey, and they obtain an average score of 62.7. Determine the Z score for this sample mean

Exhibit (i) The following data show the number of hours worked by 200 statistics students. Number of Hours Frequency 0-9 40 10 - 19 20 - 29 30 - 39 50 70 40 Refer to Exhibit (i). 1.a) The class width for this distribution b). The number of students working 19 hours or less 2.i) Find the critical value for two tailed test with a=0.02 ii) Find area under the standard-normal distribution curve to right of z = -1.24 3. You hypothesize that people who eat junk food will have higher scores on a "health problems" survey (p = 60, o = 8). Random sample of junk food eaters ( n = 25) complete the health problems survey, and they obtain an average score of 62.7. Determine the Z score for this sample mean

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.

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Question

Can you help me with this question please

Exhibit (i)
The following data show the number of hours worked by 200 statistics students.
Number of Hours
Frequency
0-9
40
10 - 19
50
20 - 29
30 - 39
70
40
Refer to Exhibit (i).
1.a) The class width for this distribution
b). The number of students working 19 hours or less
2. i) Find the critical value for two tailed test with a=0.02
ii) Find area under the standard-normal distribution curve to right of z = -1.24
3. You hypothesize that people who eat junk food will have higher scores on a "health
problems" survey (u = 60, o = 8). Random sample of junk food eaters ( n = 25) complete the
health problems survey, and they obtain an average score of 62.7. Determine the Z score for
this sample mean
4. A simple random sample of 16 observations from a normal population resulted in a sample
mean of 17.25 and a sample standard deviation of 3.3. Develop a 95% confidence interval for
the population mean. (Z=1.64)
The price of lunch at the mall has a mean of $5.00. The standard deviation is $1.50. Find the
following.
5. Probability of spending less than $5.62
Z-score:
P(xs5.62):

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