Solve -11 > -1 - 2x<br> solve your answer step by step

William got $150 for making all A’s on his report card. He wants to spend it on CDs and DVDs. The local video store is having a

olga55 [171]

What are the options?

3 0

3 years ago

Consider a left-tailed test, where the p-value is found to be 0.10. If the sample size n for this test is 49, then the t statist

tigry1 [53]

Answer:

$df=n-1=49-1=48$

We know that the p value is 0.1, and since is a left tailed test would be given by:

$p_v = P(t_{48} < t_{calculated})=0.1$

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is $t_{calculated}=-1.29944$

Step-by-step explanation:

State the null and alternative hypotheses to be tested

We need to conduct a hypothesis in order to determine if the true mean is lower than specified valu $\mu_o$ , the system of hypothesis would be:

Null hypothesis: $\mu \geq \mu_o$

Alternative hypothesis: $\mu < \mu_o$

Compute the test statistic

We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

We can find the degrees of freedom for this test given by:

$df=n-1=49-1=48$

We know that the p value is 0.1, and since is a left tailed test would be given by:

$p_v = P(t_{48} < t_{calculated})=0.1$

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is $t_{calculated}=-1.29944$

3 0

3 years ago

Please help me. Thank you. I appreciate it :)

puteri [66]

Step-by-step explanation:

the answer should be 18

7 0

3 years ago

Read 2 more answers

Please help I’ll give brailiest

Scrat [10]

The total angle sum of a triangle is 180°
As such, 180= 78 + 2s +4s
102= 6s
s=17

3 0

2 years ago

Read 2 more answers

Between which two square roots of integers could you find 2.7182818284

klasskru [66]

That's the beginning of Euler's number ' e '.
It falls between the square roots of 7 and 8 .

Hey ! You know what !
It falls between the square roots of any integer
less than 8 and any integer greater than 7 .

8 0

3 years ago

Solve -11 > -1 - 2x solve your answer step by step