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3 years ago

Help please! Greatly appreciated if you do!

Mathematics

2 answers:

Kisachek [45]3 years ago

4 0

Answer:

i think its D because fun isn't 25%. food is 25% and fun is smaller than food

Mila [183]3 years ago

4 0

Answer:

The blue plus the yellow makes the half mark all the way across the circle. Just for example the red, green, and purple make the other half.

Hope that helps!! Have a good day!! :)

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A hypothesis test is conducted at the .05 level of significance to test whether or not the population correlation is zero. If th

finlep [7]

Answer:

Th computed value of the test statistic is 3.597

Step-by-step explanation:

The null and the alternative hypothesis is as follows:

Null Hypothesis:

$\mathbf{H_o:}$ the population correlation coefficient is equal to zero

$\mathbf{H_a:}$ the population correlation coefficient is not equal to zero

The test statistics for Pearson correlation coefficient is thus computed as :

$t =\dfrac{r \sqrt{(n-2)}} { \sqrt{(1-(r)^2)} }$

where;

r = correlation coefficient = 0.60

n = sample size = 25

So;

$t =\dfrac{0.60 \sqrt{(25-2)}} { \sqrt{(1-(0.60)^2)} }$

$t =\dfrac{0.60 \sqrt{(23)}} { \sqrt{(1-0.36} }$

$t =\dfrac{0.60 *4.796} {0.8}$

t = 3.597

Comparing to a critical value of t (23 degrees of freedom two-tailed value) = 2.069

Decision Rule:

Since computed value of t is greater than the critical value of t; We reject the null hypothesis and accept the alternative hypothesis.

Conclusion:

We conclude that the population correlation coefficient significantly differs from 0 at 5% (0.05) level of significance.

6 0

4 years ago

FIRST ANSWER GETS A BRAINLEST The right rectangular prism is packed with unit cubes of the appropriate unit fraction edge length

-Dominant- [34]

Answer:

2 /3 cm3

Step-by-step explanation:

V = (6

)(2)(2) = 26

Can also be solved by counting the fractional cubes.

7 0

3 years ago

Read 2 more answers

A professor's son, having made the wise decision to drop out of college, has been finding his way in life taking one job or anot

Trava [24]

Answer:

88.88% probability that it endures for less than a year and a half

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 66, \sigma = 10$