Question

ON GRAPHING CALCULATOR PLEASE

7. A survey of 50 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated.

You're testing the claim that the mean difference is greater than
1.3.

From the sample, the mean difference was 1.6, with a standard
deviation of 0.44.

Calculate the test statistic, rounded to two decimal places

9. We considered the differences between the temperature
readings in January 1 of 1968 and 2008 at 51 locations in the
continental US in Exercise 5.19. The mean and standard deviation of
the reported differences are 1.1 degrees and 4.9 degrees
respectively.

(a) Calculate a 90% confidence interval for the average difference
between the temperature measurements between 1968 and 2008.

lower bound: degrees*(please round to two decimal
places)*

upper bound: degrees*(please round to two decimal
places)*

*4.* You wish to test the following claim (HaHa) at a
significance level of α=0.10α=0.10.

Ho:p1=p2Ho:p1=p2

Ha:p1≠p2Ha:p1≠p2

You obtain 140 successes in a sample of size n1=444n1=444 from the
first population. You obtain 157 successes in a sample of size
n2=754n2=754 from the second population. For this test, you should
NOT use the continuity correction, and you should use the normal
distribution as an approximation for the binomial
distribution.

t test = 4.146

What is the p-value for this sample? (Report answer accurate to
four decimal places.)

p-value =

Answer #1

A survey of 50 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated. You're testing
the claim that the mean difference is greater than 1.5. From the
sample, the mean difference was 1.55, with a standard deviation of
0.78. Calculate the test statistic, rounded to two decimal
places

You wish to test the following claim (HaHa) at a significance
level of α=0.001α=0.001.
Ho:p1=p2Ho:p1=p2
Ha:p1<p2Ha:p1<p2
You obtain 100 successes in a sample of size n1=285n1=285 from the
first population. You obtain 278 successes in a sample of size
n2=662n2=662 from the second population.
What is the test statistic for this sample? (Report answer accurate
to two decimal places.)
test statistic =
What is the p-value for this sample? (Report answer accurate to
four decimal places.)
p-value =

1. A survey of 40 people was conducted to compare their self
reported height to their actual height. the difference between
reported height and actual height was calculated.
you’re testing the claim that the mean difference is greater
than 0.9.
From the sample, the mean difference was 1.25, with a standard
deviation of 0.46.
calculate the test statistic, rounded to two decimal
places.
2. You are conductinf a study to determine if there is a
significant difference between typical salaries...

A survey of 33 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated.
You're testing the claim that the mean difference is greater than
1.3.
From the sample, the mean difference was 1.4, with a standard
deviation of 0.8.
Calculate the test statistic, rounded to two decimal places

A survey of 40 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated.
You're testing the claim that the mean difference is greater than
1.3.
From the sample, the mean difference was 1.35, with a standard
deviation of 0.48.
Calculate the test statistic, rounded to two decimal places

A survey of 38 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated.
You're testing the claim that the mean difference is greater
than 1.3.
From the sample, the mean difference was 1.45, with a standard
deviation of 0.48.
Calculate the test statistic, rounded to two decimal places

A survey of 45 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated. You're testing
the claim that the mean difference is greater than 0.8. From the
sample, the mean difference was 1.05, with a standard deviation of
0.76. Calculate the test statistic, rounded to two decimal
places

A survey of 30 people was conducted to compare their
self-reported height to their actual height. The difference between
reported height and actual height was calculated.
You're testing the claim that the mean difference is greater
than 0.
From the sample, the mean difference was 0.3, with a standard
deviation of 0.56.
Calculate the test statistic,
rounded to two decimal places

You wish to test the following claim (HaHa) at a significance
level of α=0.02α=0.02.
Ho:p1=p2Ho:p1=p2
Ha:p1<p2Ha:p1<p2
You obtain a sample from the first population with 228 successes
and 482 failures. You obtain a sample from the second population
with 96 successes and 134 failures. For this test, you should NOT
use the continuity correction, and you should use the normal
distribution as an approximation for the binomial
distribution.
What is the test statistic for this sample? (Report answer accurate
to...

You wish to test the following claim (HaHa) at a significance
level of α=0.02α=0.02.
Ho:p1=p2Ho:p1=p2
Ha:p1≠p2Ha:p1≠p2
You obtain 211 successes in a sample of size n1=471n1=471 from the
first population. You obtain 205 successes in a sample of size
n2=475n2=475 from the second population. For this test, you should
NOT use the continuity correction, and you should use the normal
distribution as an approximation for the binomial
distribution.
What is the test statistic for this sample? (Report answer accurate
to...

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