Question 1

Consider a study on the diet of coyotes. The table shown indicates an analysis of the bones found in the stomachs of 40 roadkill coyotes, and the number of species found in each was measured. Previous studies claim that the mean number of species eaten by coyotes (i.e., the number of species expected in the stomach contents) is 4.5 species per coyote. Conduct a one-sample t-test on this data and determine whether this seems to be true. Assume a = 0.5. In your answer, present the following: your calculated t-value, an exact P-value using a computer or a range for the P-value using a table of critical values, and a statement about whether the population mean appears to be 4.5 or not based on the sample.
​
 Number of species' bones found in 40 sets of stomach contents from coyotes.

$\begin{array}{cc}
\text { Number }\
\text { of bones } & \text { Frequency } \
\hline 0 & 0 \
1 & 1 \
2 & 2 \
3 & 4 \
4 & 8 \
5 & 9 \
6 & 9 \
7 & 5 \
8 & 1 \
9 & 1 \
10 & 0
\end{array}$ ​

Accepted Answer

The answer of Consider a study on the diet of...

Question 2

Consider a study on the diet of coyotes. The table shown indicates an analysis of the bones found in the stomachs of 26 roadkill coyotes, and the number of species found in each was measured. Previous studies claim that the mean number of species eaten by coyotes (i.e., the number of species expected in the stomach contents) is 3.4 species per coyote. Conduct a one-sample t-test on this data and determine whether this seems to be true. Assume a = 0.5. In your answer, present the following: your calculated t-value, an exact P-value using a computer or a range for the P-value using a table of critical values, and a statement about whether the population mean appears to be 3.4 or not based on the sample.
​
 Number of species' bones found in 26 sets of stomach contents from coyotes.

$\begin{array}{cc}
\text { Number }\
\text { of bones } & \text { Frequency } \
\hline 0 & 0 \
1 & 1 \
2 & 2 \
3 & 6 \
4 & 8 \
5 & 6 \
6 & 2 \
7 & 1 \
8 & 0 \
9 & 0 \
10 & 0
\end{array}$

Accepted Answer

The answer of Consider a study on the diet of...

Question 3

Consider a sample with 25 values that has sample mean of 8.00 and a standard deviation of 5.00. Does this sample provide sufficient evidence to conclude that the mean of the population it was sampled from differs from 6.00?

Accepted Answer

The answer of Consider a sample with 25 values that...

Question 4

Consider a sample with 21 values that has sample mean of 8.00 and a standard deviation of 4.00. Does this sample provide sufficient evidence to conclude that the mean of the population it was sampled from differs from 6.00?

Accepted Answer

The answer of Consider a sample with 21 values that...

Question 5

For the data set shown below, calculate the following values: sample mean, 95% confidence interval for the population mean, sample variance, 95% confidence interval for the population variance, sample standard deviation, approximate 95% confidence interval for the population standard deviation.
 Data:
$\begin{array}{llllllllll}
2 & 2 & 3 & 3 & 3 & 4 & 4 & 4 & 4 & 4 \
5 & 5 & 5 & 5 & 5 & 5 & 5 & 6 & 6 & 6 \
6 & 6 & 7 & 7 & 7 & 8 & 8 & & &
\end{array}$

Accepted Answer

The answer of For the data set shown below, calculate...

Question 6

For the data set shown below, calculate the following values: sample mean, 95% confidence interval for the population mean, sample variance, 95% confidence interval for the population variance, sample standard deviation, approximate 95% confidence interval for the population standard deviation.
 Data:
$\begin{array}{llllllll}
1 & 2 & 2 & 2 & 3 & 3 & 3 & 3 \
4 & 4 & 4 & 4 & 4 & 4 & 5 & 5 \
5 & 5 & 6 & 6 & 6 & 7 & &
\end{array}$

Accepted Answer

The answer of For the data set shown below, calculate...

Quiz 11: Inference for a Normal Population

Consider a sample with 25 values that has sample mean of 8.00 and a standard deviation of 5.00. Does this sample provide sufficient evidence to conclude that the mean of the population it was sampled from differs from 6.00?

Consider a sample with 21 values that has sample mean of 8.00 and a standard deviation of 4.00. Does this sample provide sufficient evidence to conclude that the mean of the population it was sampled from differs from 6.00?