Recent questions in Two-way tables

Bellenik3
2022-08-18

“If the conditional distribution in a two-way table are similar to each other, the P-value of the test is close to zero”.

temeljil4l
2022-08-17

“In a two-way table, if the expected counts are about the same as the observed counts, we fail to reject the null hypothesis”.

Two-way tables
Answered

2022-03-31

**Diabetes and unemployment. **A Gallup poll surveyed Americans about their employment status and whether or not they have diabetes. The survey results indicate that 1.5% of the 47,774 employed (full or part time) and 2.5% of the 5,855 unemployed 18-29 year olds have diabetes. (Gallup, 2012)

a. Create a two-way table presenting the results of this study.

b. State appropriate hypotheses to test for difference in proportions of diabetes between employed and unemployed Americans.

c. The sample difference is about 1%. If we completed the hypothesis test, we would find that the p-value is very small (about 0), meaning the difference is statistically significant. Use this result to explain the difference between statistically significant and practically significant findings.

Two-way tables
Answered

skeexerxo175o
2021-11-21

a) If h(x)=f(g(x)), find h'(3)

b) If H(x)=g(f(x)),find H'(1).

Two-way tables
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Liesehf
2021-11-20

Find the Covariance of X and Y

$Cov(X,Y)=E\left[XY\right]-E\left[X\right]E\left[Y\right]$

Find the expection of single variables. I'm having troubles evaluation $E\left[XY\right]$. Can it be $X\xb7E\left[Y\right]$?

$\begin{array}{|cccc|}\hline & \text{Smoker}& \text{Non-Smoker}& \text{Total}\\ \text{Heart Attack}& 0.03& 0.03& 0.06\\ \text{No Heart Attack}& 0.44& 0.50& 0.94\\ \text{Totals}& 0.47& 0.53& \phantom{\rule{0ex}{0ex}}\\ \hline\end{array}$

Two-way tables
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Amari Flowers
2021-10-28

You must choose all five correct statements to get credit.

A) individuals, if the population is Normal

B) individuals, if the population is NOT Normal

C) averages based on small n, if the population is Normal

D) averages based on small n, if the population is NOT Normal

E) averages based on large n, if the population is Normal

F) averages based on large n, if the population is NOT Normal

G) count of successes out of n independent trials

H) sample proportion of successes out of n independent trials, when np and

Two-way tables
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Wierzycaz
2021-09-26

The following two-way table displays information about favorite sports cars that resulted from a survey given to all students at Shore High School.

What is the probability that a randomly selected student from this school is a boy?

Two-way tables
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Kye
2021-09-23

You randomly survey students in your school. You ask whether they have jobs. You display your results in the two-way table. How many male students do not have a job?

Two-way tables
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Tabansi
2021-09-23

Use the two-way table of data from another student survey to answer the following question.

What is the marginal relative frequency of students surveyed who like weight lifting?

Two-way tables
Answered

mattgondek4
2021-09-22

You randomly survey students in your school about whether they have a pet. You display your results in the two-way table. How many female students took the survey?

Two-way tables
Answered

Caelan
2021-09-20

Use the two-way table of data from another student survey to answer the following question.

Find the conditional relative frequency that a student likes to lift weights, given that the student likes aerobics.

Another interesting aspect of statistics and probability that you will encounter in high school and at college is dealing with two-way tables, which is less complex than it really is. You can start with the two-way tables math that you will encounter not only with the equations but with the majority of questions that deal with two-way tables math where you have two categories. If this sounds too complex as you are looking for answers, turn to our examples of two-way tables. The safest bet would be starting with the two-way tables answers that will have both calculation and analysis.