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Romashka-Z-Leto [24]
3 years ago
14

Your checking account balance is $50. You spend $11 and then deposit $27.

Mathematics
1 answer:
alexira [117]3 years ago
6 0
The correct answer would be $66
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Can you help me find the test statistic AND Pvalue for a hypothesis test. The question is: In a survey respondents were asked wo
vitfil [10]

Answer:

Test statistic z=0.65

P-value=0.52

Fail to reject the null hypothesis.

Step-by-step explanation:

Here we have to perform a hypothesis test on the difference of proportions. We may want to answer if there is significant difference in the proportions of male and females.

The null and alternative hypothesis are:

H_0: \pi_1=\pi_2\\\\H_1: \pi_1\neq\pi_2

The significance level is defined as 0.05.

The YES proportion for females is:

p_1=33/98=0.337

The YES proportion for males is:

p_2=30/102=0.294

The weighted average of p can be calculated as:

p=\frac{n_1*p_1+n_2*p_2}{n_1+n_2}=\frac{33+30}{98+102}=0.315

With this p, we estimate the standard deviation

s=\sqrt{\frac{p(1-p)}{n_1}+\frac{p(1-p)}{n_2} }=\sqrt{\frac{0.315(1-0.315)}{98}+\frac{0.315(1-0.315)}{102} }=0.066

The test statistic z can be calculated as:

z=\frac{p_1-p_2}{s} =\frac{0.337-0.294}{0.066}=\frac{0.043}{0.066}=0.65

We can calculate the p-value for z, taking into account is a two-sided test

P(|z|>0.65)=0.52

The P-value (0.52) is greater than the significance level (0.05), so the effect is not significant. It failed to reject the null hypothesis.

We have enough evidence to conclude that the proportions that vote YES are different between genres.

8 0
4 years ago
Oblicz.Pamiętaj o kolejności wykonywania działań
sasho [114]

Answer:

don't know don't care

Step-by-step explanation:

6 0
4 years ago
Mariko makes a slice through a three-dimensional object perpendicular to the
erma4kov [3.2K]

Answer:

A. D.

Step-by-step explanation:

Visual Examples to help!

6 0
2 years ago
Read 2 more answers
Can anybody help me with this pls?
julia-pushkina [17]

Answer:

  d = 12

Step-by-step explanation:

In intercept form, the equation of the plane is ...

  x/a +y/b +z/c = 1 . . . . . for x, y, z intercepts a, b, c

You have (a, b, c) = (2, 3, 4), so the equation of the plane is ...

  x/2 +y/3 +z/4 = 1

Multiplying by 12 gets rid of the fractions and puts the equation in standard form:

  6a +4y +3z = 12

The value of d is 12.

8 0
2 years ago
-3 1/2 - [-12 1/4]...............................................
nasty-shy [4]

Answer:

8.75

Step-by-step explanation:

5 0
3 years ago
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