Question
In: Statistics and Probability
The data below are the temperatures on randomly chosen days during the summer and the number...
The data below are the temperatures on randomly chosen days during the summer and the number of employee absences at a local company on those days.
Temperature,x: 72,85, 91, 90, 88, 98, 75, 100, 80
Number of absences, y: 3, 7, 10, 10 8, 15, 4, 15, 5
A) Find the residual when temperature is 98. Analyze the result.
B) Test the claim, at the α = 0.05 level of significance, that a linear relation exists between the temperature and number of absences. Apply classical approach and p-value approach.
(c) Find 95 % confidence interval about the slope for the true least-square regression line. Interpret the result.
Solutions
orchestra answered 1 year agoRelated Solutions
The data below are the temperatures on randomly chosen days during a summer class and the...
The data below are the temperatures on randomly chosen days
during a summer class and the number of absences on those days.
Construct a 95% prediction interval for y, the number of days
absent, given x = 95 degrees and y = 0.449x - 30.27
Temperature X
72
86
91
90
88
98
75
100
80
Number of absences Y
3
7
10
10
8
15
4
15
5
a. (9.957, 14.813)
b. (11.378, 13.392)
c. (4.321, 6.913)
d. (3.176,...
Question #1 The paired data below consist of the temperatures on randomly chosen days and the...
Question #1
The paired data below consist of the temperatures on randomly
chosen days and the amount a certain kind of plant grew (in
millimeters). Test the claim that there is a linear correlation
between temperature and plant growth, with 0.01 significance level
and P-Value method.
temp
63
77
51
52
72
47
52
45
75
Growth
35
38
51
12
32
33
16
8
15
Question #2
A nationwide study of American homeowners revealed that 64% have
one or...
The following are the temperatures on randomly chosen days and the amount a certain kind of...
The following are the temperatures on randomly chosen days and
the amount a certain kind of plant grew (in millimeters):
Temp 77 88 85 61 64 72 73 63 74
Growth 39 17 12 22 15 29 14 25 43 Claim is ρ = 0.
a.) Find the correlation coefficient
c.) State the conclusion.
d.) Translate the conclusion into non-technical words.
The following are the temperatures on randomly chosen days and the amount a certain kind of...
The following are the temperatures on randomly chosen days and
the amount a certain kind of plant grew (in millimeters):
Temp 77 88 85 61 64 72 73 63 74
Growth 39 17 12 22 15 29 14 25 43 Claim is ρ = 0.
a.) Find the correlation coefficient, r.
b.) State the conclusion.
c.) Translate the conclusion into non-technical words.
The data below shows the observed pollution indexes of air samples that are randomly chosen in...
The data below shows the observed pollution indexes of air
samples that are randomly chosen in two areas of a city. The
pollution indexes of air are said to be normally distributed from
both areas. Use a 95% confidence interval to
determine if the mean pollution indexes of air are different for
the two areas.
Area A
Area B
2.92
4.69
1.84
3.44
1.88
4.86
0.95
3.69
5.35
5.81
4.26
4.95
3.81
5.55
3.18
4.47
Below are the grade point averages for 24 randomly chosen university business students during a recent...
Below are the grade point averages for 24 randomly chosen
university business students during a recent semester.
a) Is there sufficient evidence to indicate that the variances
for the four classifications of students are not the same? Assume
alpha is 0.05.
b) What is the p-value for this problem? Explain its meaning in
words.
c) Is there sufficient evidence to indicate that the means for
the four classifications of students are not the same? Use alpha =
0.05.
d) If...
The data below reflect the number of vacation days that a sample of employees at a...
The data below reflect the number of vacation days that a sample
of employees at a certain company have left to take before the end
of the year. Complete parts a through c. 11 7 2 3 10 7 9 a. Compute
the range for these sample data. The range is b. Compute the
variance for these sample data. The variance is nothing. (Round to
two decimal places as needed.) c. Compute the standard deviation
for these sample data. The...
Recorded here are the germination times (in days) for sixteen randomly chosen seeds of a new...
Recorded here are the germination times (in days) for sixteen
randomly chosen seeds of a new type of bean: 11, 13, 12, 13, 20,
15, 18, 17, 14, 18, 10, 12, 13, 17, 14, 17 Send data to Excel
Assuming that germination times are normally distributed, find a
95% confidence interval for the mean germination time for all beans
of this type. Then complete the table below. Carry your
intermediate computations to at least three decimal places. Round
your answers...
6. Listed below are actual high temperatures and the high temperatures that were forecast five days...
6. Listed below are actual high temperatures and the high
temperatures that were forecast five days earlier. Use a .05
significance level to test the claim of a zero mean difference
between the actual high temperatures and the high temperatures that
were forecast one day earlier. Use our 4-step procedure. This is a
matched or paired samples hypothesis test. Actual high: 80 77 81 85
73 High forecast one day earlier: 78 75 81 85 76
Step 1: Ho____. Ha:...
Question 10 Recorded here are the germination times (in days) for fifteen randomly chosen seeds of...
Question 10
Recorded here are the germination times (in days) for fifteen
randomly chosen seeds of a new type of bean:
11, 13, 11, 10, 15, 15, 10, 20, 10, 20, 13, 21, 16, 14, 12
Assuming that germination times are normally distributed, find a
95% confidence interval for the mean germination time for all beans
of this type. Then complete the table below.
Carry your intermediate computations to at least three decimal
places. Round your answers to one decimal...
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