PLSSS ASAP 20 POINTS AND BRAINLIEST IF RIGHT!!!!!!

The number preceding each line identifies the scale size of the font. Do NOT round your answer. Enter all digits of your answer

katen-ka-za [31]

Let
an ------> the scale size of the font

we have that
a1=1
a2=1.5
a3=2.25
a4=?

a2/a1=1.5/1=1.5
a3/a2=2.25/1.5=1.5

the scale factor is 1.5
so
a4=a3*1.5------> a4=2.25*1.5------> a4=3.375

the answer is
3.375

8 0

4 years ago

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

I’m pretty sure the answer is 50.3 but could someone please tell me if it’s square yards or yards?

olchik [2.2K]

Answer:

yards because it can't be squared if its a circle

Step-by-step explanation:

3 0

4 years ago

The volume of 10,000 drops of liquid is 100 fluid ounces. What is the volume of 10 drops?

Ludmilka [50]