Question
In: Statistics and Probability
1. The numbers below represent heights (in feet) of 3-year old elm trees. 5.1, 5.5, 5.8,...
1. The numbers below represent heights (in feet) of 3-year old
elm trees. 5.1, 5.5, 5.8, 6.1, 6.2, 6.4, 6.7, 6.8, 6.9, 7.0, 7.2,
7.3, 7.3, 7.4, 7.5, 7.7, 7.9, 8.1, 8.1, 8.2, 8.3, 8.5, 8.6, 8.6,
8.7, 8.7, 8.9, 8.9, 9.0, 9.1, 9.3, 9.4, 9.6, 9.8, 10.0, 10.2,
10.2
Using the chi-square goodness-of-fit test, determine whether the
heights of 3-year old elm trees are normally distributed, at
the
a =.05 significance level. Also, find the p
value.
Suppose that X is normal, where µ is known and σ2 is unknown, and
let X1, …, Xn be a random sample from X. Let ?2 ̂ = 1 ? ∑ (?? − ?)2
? ?=1 .
Solutions
orchestra answered 2 years agoRelated Solutions
The numbers below represent heights (in feet) of 3-year old elm trees. 5.1, 5.5, 5.8, 6.1,...
The numbers below represent heights (in feet) of 3-year old elm
trees.
5.1, 5.5, 5.8, 6.1, 6.2, 6.4, 6.7, 6.8, 6.9, 7.0,
7.2, 7.3, 7.3, 7.4, 7.5, 7.7, 7.9, 8.1, 8.1, 8.2,
8.3, 8.5, 8.6, 8.6, 8.7, 8.7, 8.9, 8.9, 9.0, 9.1,
9.3, 9.4, 9.6, 9.8, 10.0, 10.2, 10.2
Using the chi-square goodness-of-fit test, determine whether the
heights of 3-year old elm trees are normally distributed, at the a
= .05 significance level. Also, find the p- value.
Part 1: The following numbers below represent heights (in feet) of 3-year old elm trees: 5.1,...
Part 1: The following numbers below represent heights (in feet)
of 3-year old elm trees: 5.1, 5.8, 6.1, 6.2, 6.4, 6.7, 6.8, 6.9,
7.0, 7.2, 7.3, 7.3, 7.4, 7.5, 8.1, 8.1, 8.2, 8.3, 8.5, 8.6, 8.6,
8.7, 8.7, 8.9, 8.9, 9.0, 9.1, 9.3, 9.4. Assuming that the heights
of 3-year old elm trees are normally distributed, find a
(two-sided) 90% confidence interval for the mean height of 3-year
old elm trees.
Part 2:Assuming that the heights of 3-year old elm...
he following data represent trunk circumferences (in mm) for a random sample of 4-year-old apple trees...
he following data represent trunk circumferences (in mm) for a
random sample of 4-year-old apple trees at the East Malling
Agriculture Research Station in England (Reference: S. C. Pearce,
University of Kent at Canterbury).
108 99 106 102 115 120 120 117 122 142 106 111 119 109 125 108
116 105 117 123 103 114 101 99 112 120 108 91 115 109 114 105 99
122 106 113 114 75 96 124 91 102 108 110 83 90...
1. The numbers below represent the body temperature of six subjects taken at 8am and again...
1. The numbers below represent the body temperature of six
subjects taken at 8am and again at 3pm. Use significance level of
.05 to test the claim that theres a difference in temperatures due
to time of day.
8am 97.8, 97, 98.5, 97.4, 97.4, 99
12am 98, 98.6, 99.1, 98.2, 97.8, 98.8
Please provide Ho,Ha,Right and left tail, two tails,
critical value, alpha, test-statistic, p-value, decision and
conclusion
In a study of the accuracy of fast food orders one restaurant...
Suppose a histogram for the heights of two-year-old children is approx bell-shaped as shown below, with...
Suppose a histogram for the heights of two-year-old children is
approx bell-shaped as shown below, with a mean of 27 inches and a
standard deviation of 1.5 inches. Using the 68-95-99.7 rule, about
what proportion of heights are between 25.5 and 28.5?
Lisa is a 31-year-old Caucasian female of Northern European descent. She is 5 feet 3 inches...
Lisa is a 31-year-old Caucasian female of Northern European
descent. She is 5 feet 3 inches tall, has an average frame size,
and weighs 162 pounds with a BMI of 28.7 (overweight). She lives
with her husband and two children, and works as a surgical
technician at a local community hospital.
Lisa was diagnosed with Hodgkin’s lymphoma six months ago after
experiencing chest pain over a few days. Lisa is currently on a
weekly chemotherapy (doxorubicin, bleomycin, vinblastine, and
dacarbazine)...
Lisa is a 31-year-old Caucasian female of Northern European descent. She is 5 feet 3 inches...
Lisa is a 31-year-old Caucasian female of Northern European
descent. She is 5 feet 3 inches tall, has an average frame size,
and weighs 162 pounds with a BMI of 28.7 (overweight). She lives
with her husband and two children, and works as a surgical
technician at a local community hospital.
Lisa was diagnosed with Hodgkin’s lymphoma six months ago after
experiencing chest pain over a few days. Lisa is currently on a
weekly chemotherapy (doxorubicin, bleomycin, vinblastine, and
dacarbazine)...
1. Suppose the heights of 18-year-old men are approximately normally distributed, with mean 71 inches and...
1. Suppose the heights of 18-year-old men are approximately
normally distributed, with mean 71 inches and standard
deviation 5 inches.
(a) What is the probability that an 18-year-old man selected at
random is between 70 and 72 inches tall? (Round your answer to four
decimal places.)
(b) If a random sample of twenty-three 18-year-old men is selected,
what is the probability that the mean height x is between
70 and 72 inches? (Round your answer to four decimal places.)
(c)...
1. Listed below are altitudes (thousands of feet) and air temperatures (degree Fahrenheit). Altitude 3 10...
1. Listed below are altitudes (thousands of feet) and air
temperatures (degree Fahrenheit).
Altitude
3
10
14
22
28
31
33
Temperature
57
37
24
-5
-30
-41
-54
a. Construct a scatterplot.
b. Find the value of the linear correlation coefficient r.
c. Find the regression equation and draw the regression line on
the scatterplot in a).
d. Find the critical values from Table A-6 using α = .05 and
draw the graph.
e. Determine whether there is sufficient...
old Corporation is considering a project. The data for the 3 year project are given below....
old Corporation is considering a project. The data for the 3
year project are given below. Should the manager of Gold
Corporation accept this project? Use the NPV criteria to make your
decision.
Sales revenue, each year: $50,000
Variable costs, each year: $12,000
Fixed costs, each year: $0
Sunk costs: $30,000
Initial outlay: $45,000
Depreciation, each year: $15,000
Tax rate: 20%
WACC: 12%
The project should not be accepted because it has an NPV of
-$15,179
The project should be...
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