Question

Body Fat % | Income for Recreation % | Stress Index |

13 | 10 | 7 |

8 | 15 | 8 |

5 | 12 | 12 |

11 | 9 | 15 |

6 | 10 | 6 |

7 | 20 | 9 |

9 | 11 | 5 |

13 | 11 | |

14 |

2. Determine the area under the normal curve for the following z scores:

a. Above z = 1.50

b. Below z = -.25

c. Between z = -.50 and z = .75

d. Above z = 2.25 and below z = -1.45

e. Between z= 1.00 and 2.50

Answer #1

Here we want to find the area under the normal curve for the following mentioned Z-scores

(A)

P(Z> 1.50) = 1- P(Z <1.50)

=1- 0.9332 **using standard normal z probablity
table**

=0.0668

(B)

P(Z < -0.25) = 0.4013 **using standard normal z
probablity table**

(C)

=0.7734 - 0.3085 **using standard normal z probablity
table**

=0.4649

(D)

=0.9875 - 0.0735 **using standard normal z probablity
table**

=0.9140

(E)

=0.9938 - 0.8413 **using standard normal z probablity
table**

=0.1525

Time spent indoors (hours)
3
5
6
9
10
9
8
10
10
12
13
11
16
11
7
8
18
13
12
13
1.Can you calculate z-scores for each of the raw scores above?
If so, please calculate the z-score for a kid who reported spending
8 hours indoors.
2. if you transformed the variable “time spent indoors” from an
X-scale to a z-scale, what would be the new mean of the
distribution? What would be the new standard...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

Let
U = {5, 6, 7, 8, 9, 10, 11, 12, 13, 14},
A = {5, 7, 9, 11, 13},
B = {6, 8, 10, 12, 14},
and
C = {5, 6, 8, 9, 12, 13}.
List the elements of each set. (Enter your answers using roster
notation. Enter EMPTY or ∅ for the empty set.)
(a) Ac ∩ (B
∩ C c)
(b) (A ∪ Bc) ∪
(B ∩ C c)
(c) (A ∪
B)c ∩
C c

The sample is 5, 8, 7, 10, 13, 6, 9, 11, 12. To test whether the
population mean is 10, we apply
z-test
t-test
F-test
ANOVA test

Nadiya collected all the scores in her class
6, 7, 7, 7, 8, 8, 8, 8, 9, 10, 10, 11,
11, 11, 11, 11, 11, 11, 12, 13, 13, 13, 14, 15
What is the mode?
What is the 70th percentile?
What is the 3rd decile?
Create a box and whiskers plot of the set of scores.

Indices DUR DUR (OLD)
1 6 11
2 13 14
3 11 14
4 7 10
5 9 9
6 7 10
7 8 11
8 5 8
9 7 6
10 7 10
11 7 13
12 3 5
13 10 13
14 3 15
15 4 12
16 9 7
17 9 8
18 10 13
19 6 10
20 8 14
21 10 14
22 8 18
23 2 10
24 4 11
25 7 16
26 ...

13, 16, 7, 8, 10, 19, 15, 16, 13, 15 ,8 ,5 ,12, 17, 10, 0, 3,
14, 12, 2
The data represent the time, in minutes, spent
reading a political blog in a day. Construct a frequency
distribution using
5 classes. In the table, include the midpoints, relative
frequencies, and cumulative frequencies. Which class has the
greatest frequency and which has the least frequency?

Data Set A: 11, 12, 13
Data Set B: 9, 10, 11, 12, 13, 14, 15
Data Set C: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
Find the mean, sample standard deviation–treating the data as a
sample, and the population standard deviation–treating the data as
a population.

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...

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