Question
In: Statistics and Probability
Test the hypothesis that the people will spend less than an average of $125 on gifts....
Test the hypothesis that the people will spend less than an average of $125 on gifts. A random sample of 18 people spent an average of 150 dollars with a standard deviation of $10. Set alpha = 0.01 and use the p-value approach. T0.0115 = 2.5
Solutions
orchestra answered 1 year agoRelated Solutions
a) A researcher wants to test if boys spend more time playing sports on average than...
a) A researcher wants to test if boys spend more time playing
sports on average than girls. Data is collected, resulting in the
table below. It is known that the times for sports have a normal
distribution in general.
Group
n
Average number of
hours
SD
Boy
35
5.2
3.3
Girl
25
3.5
5
Compute the test statistic that is corresponding to the test in
the question 9.
Round your answer to two decimal digits.
b)
Let the significance level...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 38 individuals and find the
mean IQ score is 95.8, with a standard deviation of 15.2. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 38 individuals and find the
mean IQ score is 95.8, with a standard deviation of 15.2. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .01 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 79 individuals and find the
mean IQ score is 96.1, with a standard deviation of 14.8. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .025 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 60 individuals and find the
mean IQ score is 95.7, with a standard deviation of 16. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are:
Ho: μ=100Ho: μ=100
H1:μ<100H1:μ<100
You take a simple random sample of 48 individuals and find the
mean IQ score is 97.3, with a standard deviation of 14.6. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .025 significance level. You determine the
hypotheses are:
Ho: μ=100
H1:μ<100
You take a simple random sample of 96 individuals and find the
mean IQ score is 96.2, with a standard deviation of 15.7. Let's
consider testing this hypothesis two ways: once with assuming the
population standard deviation is not known and once with assuming
that it is known.
Round to three decimal...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less
than 100 at the .05 significance level. You determine the
hypotheses are: H o : μ = 100 H 1 : μ < 100 You take a simple
random sample of 38 individuals and find the mean IQ score is 98.8,
with a standard deviation of 15.9. Let's consider testing this
hypothesis two ways: once with assuming the population standard
deviation is not known and once with...
Q1. Perform a test of hypothesis to determine whether the average TiQ is lower than the...
Q1. Perform a test of hypothesis to determine whether
the average TiQ is lower than the industry standard of 2.5 minutes
(150 seconds). Use a significance level of
α=0.05.
I just need to know the null and alternative hypothesis
for this scenario and the decision rule. Since I can't upload the
file, the decision rule can just be an example with dummy
numbers.
Q1. Perform a test of hypothesis to determine whether the average TiQ is lower than the...
Q1. Perform a test of hypothesis to determine whether
the average TiQ is lower than the industry standard of 2.5 minutes
(150 seconds). Use a significance level of
α=0.05.
I just need to know the null and alternative hypothesis
for this scenario and the decision rule. Since I can't upload the
file, the decision rule can just be an example with dummy
numbers.
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