Question

For the data below -

- Write H
_{0}(1 point) - Write H
_{1}(1 point) - Compute and report the results for the
*t*statistic (using Excel) (hint also compute descriptive statistics to help with d6); use (α = .05) – two tailed - 2 sample assuming = variances) (2 points) - Retain or reject H
_{0}(1 point)

flashcards | no flashcards |

32 | 16 |

30 | 22 |

29 | 24 |

35 | 20 |

29 | 25 |

38 | 31 |

30 | 23 |

39 | 19 |

27 | 20 |

33 | 21 |

36 | 18 |

30 | 20 |

35 | 23 |

40 | 24 |

37 | 18 |

36 | 22 |

30 | 17 |

34 | 26 |

36 | 17 |

31 | 22 |

Answer #1

descriptive statistics
for the given data
4 8 18 20 21 22 23 24 25 26 27 28 29 30 31 31 32 32 33 33 34 35 36
37 38 39 47 53

Dataset:
Husband Wife
53 50
38 34
46 44
30 36
31 23
26 31
29 25
48 51
65 46
29 26
28 23
29 32
25 22
22 21
21 24
43 50
24 27
38 33
33 26
35 29
40 29
27 25
27 24
49 38
48 39
27 27
26 24
40 34
35 37
21 26
32 39
30 28
60 52
36 40
25 23
66 55
52 34
41 40
43 ...

____________________________________________
The results of a sample of 372 subscribers to Wired
magazine shows the time spent using the Internet during the week.
Previous surveys have revealed that the population standard
deviation is 10.95 hours. The sample data can be found in the Excel
test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
____________________________________________
Develop a 95% confidence interval for the population mean
____________________________________________
If the editors...

Write the equation of the line. What is r? What is r squared?
Using the equation of the line if x is 25 what is y? Using the
equation of the line if y is 20 what is x.
x 25 32 27 24 26 18 20 23 20 16 19 15 20 27 27
y 28 34 36 28 31 22 24 26 24 23 22 13 23 35 29

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
during the week. Previous surveys have revealed that the population
standard deviation is 10.95 hours. The sample data can be found in
the Excel test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
Develop a 95% confidence interval for the population mean
If the editors of Wiredwanted to have the...

6. Using the class data (see Blackboard file - "Class Survey
Data - PSS-10 and GAS") calculate the correlation between the GAS –
Goal disengagement and the GAS – Goal reengagement scores. Write
the results in a statistical statement.
7. Using the class data calculate the correlation between the
GAS – Goal disengagement and the PSS-10 scores. Write the results
in a statistical statement.
8. Using the class data calculate the correlation between the
GAS – Goal reengagement scores and...

A study was conducted to see if students’ writing skills
continue to improve as the academic year progresses. English 101
students were asked to write essays throughout the year in
September, December, March and June. The scores were compared to
see if there is any improvement in this one-year course. Was there
a significant improvement?
The appropriate test for this problem is:
one-way ANOVA
repeated measurements
Student
September
December
March
June
1
17
23
21
24
2
25
21
21...

Write the null and alternative hypothesis for a two-tailed test
for each of the following variables: (10 points)
Student Ht Wt Age (Yrs) Shoe Size Waist Size Pocket
Change
01 64 180 39 07 36 018
02 66 140 31 09 30 125
03 69 130 31 09 25 151
04 63 125 36 07 25 011
05 68 155 24 08 31 151
06 62 129 42 06 32 214
07 63 173 30 08 34 138
08 60...

Data set for ages of students in stats class:
17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,19,
20, 20, 20, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23,
24, 25, 25, 25, 26, 26, 27, 28, 28, 28, 28, 29, 29, 32, 36, 42
1) Compute the 5-number summary and create a modified box-plot,
using the inner-quartile range to identify any outliers.

Use the following data to test if there is a difference in mean
age between mothers of a boy and mothers of a girl at alpha =0.05.
provide p-value
MomAge
gestation
sex
weight
preemie
35
39
F
3175
FALSE
22
42
F
3884
FALSE
35
39
F
3030
FALSE
23
40
F
3629
FALSE
23
42
F
3481
FALSE
25
38
F
2693
FALSE
25
40
F
3345
FALSE
24
40
F
3232
FALSE
19
40
F
2795
FALSE
20...

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