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3 years ago

ECCOTHES

Mathematics

1 answer:

faltersainse [42]3 years ago

5 0

Answer:

sorry ,but l don't know what is it?!

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two students club plan to share a bus on a trip to the capital transportation at lunch for day cost $12 per student one club has

ozzi

Answer:

$516

Step-by-step explanation:

first you multiply 12 and 25 and you get 300

then you multiply 12 and 18 and you get 216

Then finally you add 216 and 300 together to get $516

7 0

3 years ago

The sum of two numbers is10 . The difference is2 .

erma4kov [3.2K]

Answer:

6 and 4

Step-by-step explanation:

Let the numbers are x and y.

Then the equations are:

x + y = 10 (blue line)
x - y = 2 (red line)

The graph are attached with the intersection marked:

(6, 4)

3 0

3 years ago

Test the claim below about the mean of the differences for a population of paired data at the level of significance α Assume the

Evgen [1.6K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is F

$t = 1.17$

$t_ {\alpha , df} =t_ {0.10 , 8} = 1.86$

Since the test statistics is outside the rejection region , we fail to reject the null hypothesis ,There is no statistically significant evidence to reject the claim

Step-by-step explanation:

From the question we are told that

The claim is $\mu = 0$

Hence

The null hypothesis is $H_o : \mu = 0$

The alternative is $H_a : \mu \ne 0$

Generally the test statistics is mathematically represented as

$t = \frac{\= d - \mu_d }{ \frac{s_d}{ \sqrt{n} } }$

=> $t = \frac{3.5 -0 }{ \frac{8.94}{ \sqrt{9} } }$

=> $t = 1.17$

Generally the degree of freedom is mathematically represented as

$df = n- 1$

$df = 9 - 1$

$df = 8$

From the student t-distribution table the critical value of $\alpha$ at a degree of freedom of 8 is

$t_ {\alpha , df} =t_ {0.10 , 8} = 1.86$

Since the $t_ {\alpha , df}$ is outside the rejection region , we fail to reject the null hypothesis ,There is no sufficient evidence to reject the claim