2√8 -3√50+√32 AHIHIHI

As part of a study on pulse rates, a random sample of 10 study participants had their pulse rate taken and asked to sit quietly

Ivahew [28]

Answer:

$t = \frac{-1.2-0}{\frac{2.97}{\sqrt{10}}}= -1.278$

The degrees of freedom are :

$df=n-1=10-1=9$

$p_v =2*P(t_{9}$

Since the p value is a very high value is higher than the typical values for the significance level (0.05,0.1) so then we have enough evidence to FAIL to reject the null hypothesis and there is no enough evidence to conclude that the true difference in the means is different from 0. And the best conclusion would be:

d. There is not enough evidence to conclude the mean difference in pulse rates before and after the 5 minute waiting period is different from 0.

Step-by-step explanation:

We are interested to check if the true difference in pulse rates before and after after 5 minute waiting period is 0 or no so then the system of hypothesis are:

Null hypothesis: $\mu_d =0$

Alternative hypothesis: $\mu_d \neq 0$

We have the following data given:

$\bar X_d = -1.2$ sample mean for the difference

$n =10$ the sample size

$s_d = 2.97$ sample standard deviation

The statistic is given by:

$t= \frac{\bar X -\mu}{\frac{s}{\sqrt{n}}}$

And replacing we got:

$t = \frac{-1.2-0}{\frac{2.97}{\sqrt{10}}}= -1.278$

The degrees of freedom are :

$df=n-1=10-1=9$

Since we are conducting a bilateral test te p value would be given by:

$p_v =2*P(t_{9}$

Since the p value is a very high value is higher than the typical values for the significance level (0.05,0.1) so then we have enough evidence to FAIL to reject the null hypothesis and there is no enough evidence to conclude that the true difference in the means is different from 0. And the best conclusion would be:

d. There is not enough evidence to conclude the mean difference in pulse rates before and after the 5 minute waiting period is different from 0.

7 0

4 years ago

0.0259 in scientific notation

laila [671]

<span>The number in exponential notation for the product of plural consisting only of Unity (Cyfra at the construction site of Unity 1.9 ) and decimal parts and plural 10 raised to do the appropriate Powers .
</span>0,02 59
<----|
* 100 = 10²

0,0259 = 2,59* 10⁻²
........................................
5,5820
5,5820*10⁰

........................................
0,009 73
<------|
*1000 = 10³

0,00973 = 9,73*10⁻³
.........................................
8 56
|------>
: 100 = 10²
856 = 8,56 *10²
.........................................
0,0007 2
<-------|
* 10 000 = 10⁴

7,2 * 10⁻⁴
....................................
0,001 216
<------|
* 1000 = 10³
1,216 * 10⁻³

4 0

3 years ago

Is 70 thousand written in word form or standard explain

salantis [7]

<span>70 thousand is written in word form because the word ‘thousand’ is written out. In standard form a number is represented by a decimal and 10 to the power of a number.</span>

8 0

3 years ago

What is the volume of the figure?

krok68 [10]

Answer:

1530

Step-by-step explanation:

multiply 10,9,9 which would be 810

then multiply 18,4,10 which would be 720

then add together

4 0

3 years ago

Write solutions to the systems of inequalities that should lie on the double- shade region

Vadim26 [7]

Answer:

(1,1) (2,2) (1,2) (1,5) (4,4) (4,5)

there are a lot more but those are some.

Step-by-step explanation:

6 0

3 years ago