The data shown to the right represent the age (in weeks) at which babies first crawl, based on a survey of 12 mothers. Complete parts (a) through (c) below. 52 30 44 35 O 47 37 56 44 26 54 52 28 Click here to view the table of critical t-values. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. (a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. Choose the correct answer below. O A. ов. Oc. Q Q 4- 0- 0- 0- -2- -1- 20 30 40 50 60 Age (in weeks) -2+ 20 30 40 50 60 Age (in weeks) 20 30 40 50 60 20 30 40 50 60 Age (in weeks) Age (in weeks) Is it reasonable to conclude that the data come from a population that is normally distributed? A. No, because there are not enough values to make a determination. O B. Yes, because the plotted values are not linear. C. No, because the plotted values are not linear. O D. Yes, because the plotted values are approximately linear. (b) Draw a boxplot to check for outliers. Choose the correct answer below. O A. OB. В. Oc. OD. 20 30 40 50 60 20 30 40 50 60 20 30 40 50 60 20 40 50 60 30 Does the boxplot suggest that there are outliers? O A. No, there are no points that are outside of the 1.5(IQR) boundary. O B. Yes, there is at least one point that is greater than the third quartile or less than the first quartile. O C. Yes, there is at least one point that is outside of the 1.5(IQR) boundary. O D. No, there are no points that are greater than the third quartile or less than the first quartile. (c) Construct and interpret a 95% confidence interval for the mean age at which a baby first crawls. Select the correct choice and fill in the answer boxes to complete your choice, (Round to one decimal place as needed.) O A. The lower bound is confidence interval. weeks and the upper bound is weeks. We are 95% confident that the mean age at which a baby first crawls is outside of the B. The lower bound is weeks and the upper bound is weeks. We are 95% confident that the mean age at which a baby first crawls is within the confidence interval. O O Expected z-score Expected z-sce Expected z-score
The data shown to the right represent the age (in weeks) at which babies first crawl, based on a survey of 12 mothers. Complete parts (a) through (c) below. 52 30 44 35 O 47 37 56 44 26 54 52 28 Click here to view the table of critical t-values. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. (a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. Choose the correct answer below. O A. ов. Oc. Q Q 4- 0- 0- 0- -2- -1- 20 30 40 50 60 Age (in weeks) -2+ 20 30 40 50 60 Age (in weeks) 20 30 40 50 60 20 30 40 50 60 Age (in weeks) Age (in weeks) Is it reasonable to conclude that the data come from a population that is normally distributed? A. No, because there are not enough values to make a determination. O B. Yes, because the plotted values are not linear. C. No, because the plotted values are not linear. O D. Yes, because the plotted values are approximately linear. (b) Draw a boxplot to check for outliers. Choose the correct answer below. O A. OB. В. Oc. OD. 20 30 40 50 60 20 30 40 50 60 20 30 40 50 60 20 40 50 60 30 Does the boxplot suggest that there are outliers? O A. No, there are no points that are outside of the 1.5(IQR) boundary. O B. Yes, there is at least one point that is greater than the third quartile or less than the first quartile. O C. Yes, there is at least one point that is outside of the 1.5(IQR) boundary. O D. No, there are no points that are greater than the third quartile or less than the first quartile. (c) Construct and interpret a 95% confidence interval for the mean age at which a baby first crawls. Select the correct choice and fill in the answer boxes to complete your choice, (Round to one decimal place as needed.) O A. The lower bound is confidence interval. weeks and the upper bound is weeks. We are 95% confident that the mean age at which a baby first crawls is outside of the B. The lower bound is weeks and the upper bound is weeks. We are 95% confident that the mean age at which a baby first crawls is within the confidence interval. O O Expected z-score Expected z-sce Expected z-score
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:The data shown to the right represent the age (in weeks) at which babies first crawl, based on a survey of 12 mothers. Complete parts (a) through (c) below.
52
30
37
47
44
35 O
56
44
26
54
52
28
Click here to view the table of critical t-values.
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table.
(a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. Choose the correct answer
below.
O A.
ов.
В.
Oc.
Q
4-
0-
0-
0-
-2-
-1-
20 30 40 50 60
Age (in weeks)
20 30 40 50 60
20 30 40 50 60
20 30 40 50 60
Age (in weeks)
Age (in weeks)
Age (in weeks)
Is it reasonable to conclude that the data come from a population that is normally distributed?
A. No, because there are not enough values to make a determination.
O B. Yes, because the plotted values are not linear.
C. No, because the plotted values are not linear.
O D. Yes, because the plotted values are approximately linear.
(b) Draw a boxplot to check for outliers. Choose the correct answer below.
O A.
OB.
Oc.
OD.
20 30 40 50 6о
20 30 40 50 60
20 30 40 50 60
20
30
40 50 60
Does the boxplot suggest that there are outliers?
O A. No, there are no points that are outside of the 1.5(IQR) boundary.
B. Yes, there is at least one point that is greater than the third quartile or less than the first quartile.
O C. Yes, there is at least one point that is outside of the 1.5(IQR) boundary.
O D. No, there are no points that are greater than the third quartile or less than the first quartile.
(c) Construct and interpret a 95% confidence interval for the mean age at which a baby first crawls. Select the correct choice and fill in the answer boxes to complete
your choice.
(Round to one decimal place as needed.)
O A. The lower bound is
confidence interval.
| weeks. We are 95% confident that the mean age at which a baby first crawls is outside of the
weeks and the upper bound is
B. The lower bound is
weeks and the upper bound is
weeks. We are 95% confident that the mean age at which a baby first crawls is within the
confidence interval.
Expected z-score
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