(a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. Since the correlation between the expected z-scores and the observed data, (insert), (does not exceed/exceeds) the critical value (insert), it (is/is not) reasonable to conclude that the data come from a population that is normally distributed.
(b) Draw a box plot to check for outliers.
(c) Construct and interpret a 95% confidence interval for population mean cost of repair.
The data shown below represent the age (in weeks) at which babies first crawl, based on a survey of 12 mothers. Complete parts (a) through (c) below. 5, 23, 0, 44, 35, 47, 37, 56, 26, 44, 39, 30. Click here to view the table of critical correlation coefficient values for normal probability plots. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Click here to view the table of critical t-values.
(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.
A.
B.
C.
D.
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JOOS -z papadk; 0-
z pope
-z popoc
Age (in weeks)
Age (in weeks)
Age (in weeks)
Age (in weeks)
Since the correlation between the expected z-scores and the observed data, (Round to three decimal places as needed.)
the critical value it is reasonable to conclude that the data come from a population that is normally distributed.