Question
In: Math
A researcher studied the relationship between the salary of a working woman with school-aged children and...
A researcher studied the relationship between the salary of a working woman with school-aged children and the number of children she had. The results are shown in the following frequency table:
Number of Children
|
Salary |
2 or fewer children |
more than 2 children |
|
high salary |
13 |
2 |
|
medium salary |
20 |
10 |
|
low salary |
30 |
25 |
If a working woman has more than 2 children, what is the probability she has a low or medium salary?
A. 0.79 B. 0.45 C. 0.35 D. 0.95
14. The expected number of heads in 410 tosses of a fair coin is:
- 205 B. 185 C. 195 D. 175
Solutions
milcah answered 9 months agoRelated Solutions
A researcher studied the relationship between the salary of a working woman with school-aged children and...
A researcher studied the relationship
between the salary of a working woman with school-aged children and
the number of children she had. The results are shown in the
following frequency table:
Number of Children
Salary
2 or fewer children
more than 2 children
high salary
13
2
medium salary
20
10
low salary
30
25
If a working woman has more than 2 children, what is the
probability she has a low or medium salary?
A.
...
A researcher wants to study the relationship between salary and gender. She randomly selects 384individuals and...
A researcher wants to study the relationship between salary and
gender. She randomly selects 384individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Income
Male
Female
Total
Below $25,000
31
84
115
$25,000-$50,000
59
45
104
$50,000-$75,000
30
20
50
Above $75,000
65
50
115
Total
185
199
384384
State the null and alternative hypothesis
-Find the expected value for the number of men with an income
below $25,000?
Find the expected...
A researcher wants to study the relationship between salary and gender. She randomly selects 330 ......
A researcher wants to study the relationship between salary and
gender. She randomly selects 330 ... A researcher wants to study
the relationship between salary and gender. She randomly selects
330 individuals and determines their salary and gender. Can the
researcher conclude that salary and gender are dependent?
Income Male Female Total
Below $25,000 25 16 41
$25,000-$50,000 47 103 150
$50,000-$75,000 48 32 80
Above $75,000 36 23 59
Total 156 174 330
Step 1 of 8: State the...
Is there a positive relationship between grit and GPA in high school seniors? A researcher examined...
Is there a positive relationship between grit and GPA in high
school seniors? A researcher examined this issue by having students
beginning their senior year of high school complete a grit
inventory using a Likert-based scale (range 1 – 7), where higher
numbers indicate more “grit”. GPA was self-reported (scale 0 –
4.0). Enter the data shown here into SPSS to assess whether there
is a positive relationship between grit and GPA.
Grit
GPA
6.5
4.0
4.0
3.1
3.7
2.7...
A researcher wants to study the relationship between salary and gender. She randomly selects 318 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 318 individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Income Male Female
Total Below $25,000 34 23 57
$25,000-$50,000 26 70 96
$50,000-$75,000 31 22 53
Above $75,000 . 64 48 112
Total 155 163 318
Step 3 of 8 : Find the expected value for the number of women
with an income of $50,000-$75,000. Round your...
A researcher wants to study the relationship between salary and gender. She randomly selects 364 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 364 individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Income Male Female Total
Below $25,000 54 46 100
$25,000-$50,000 41 30 71
$50,000-$75,000 56 41 97
Above $75,000 29 67 96
Total 180 184 364
Step 1: State the null and alternative hypothesis
Step 2: Find the expected value for the number...
A researcher wants to study the relationship between salary and gender. She randomly selects 221 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 221 individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Income
Male
Female
Total
Below $25,000
17
19
36
$25,000$-$50,000
18
18
36
$50,000-$75,000
36
40
76
Above $75,000
35
38
73
Total
106
115
221
Step 1 of 8 :
State the null and alternative hypothesis.
Answer
H0: salary and gender are independent
Ha: salary and gender...
A researcher wants to study the relationship between salary and gender. She randomly selects 384 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 384 individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Step 1 of 8: State the null and alternative
hypothesis.
Step 2 of 8: Find the expected value for the
number of men with an income below $25,000. Round your answer to
one decimal place.
Step 3 of 8:
Find the expected value for the number of women...
A researcher wants to study the relationship between salary and gender. She randomly selects 215 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 215 individuals and determines their
salary and gender. Can the researcher conclude that salary and
gender are dependent?
Income
Male
Female
Total
Below $25,000$25,000
17
17
34
$25,000$25,000-$50,000$50,000
16
17
33
$50,000$50,000-$75,000$75,000
20
18
38
Above $75,000$75,000
53
57
110
Total
106
109
215
Step 2 of 8 :
Find the expected value for the number of men with an income
below $25,000. Round your answer...
A researcher wants to study the relationship between salary and gender. She randomly selects 324324 individuals...
A researcher wants to study the relationship between salary and
gender. She randomly selects 324324 individuals and determines
their salary and gender. Can the researcher conclude that salary
and gender are dependent?
Below $25,000$25,000
26
17
43
$25,000$25,000-$50,000$50,000
37
26
63
$50,000$50,000-$75,000$75,000
36
90
126
Above $75,000$75,000
56
36
92
Total
155
169
324
Find the value of the test statistic. Round your answer to three
decimal places.
part 5 find the degrees of freedom associated with the test
statistic...
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