Select all the true statements. *

Evaluate 2b^3 where b = 3

densk [106]

Answer:

Answer=54

Step-by-step explanation:

Given:- b=3

2b³

Solution:-

2 x b³

2 x 3 x 3 x 3

6 x 9

54 (answer)

Hope this helps you

Have a good day.

6 0

2 years ago

Read 2 more answers

In a Pew Research Center poll of 745 randomly selected adults, 589 said that it is morally wrong to not report all income on tax

Nikolay [14]

Answer:

a

The null hypothesis is $H_o : p = 0.75$

The alternative hypothesis is $H_a : p \ne 0.75$

b

$t = 2.51$

c

$p-value = 0.01207$

d

There no sufficient evidence to conclude that 75% of adults say that it is morally wrong to not report all income on tax returns

Step-by-step explanation:

From the question we are told that

The sample size is $n = 745$

The number that said it is morally wrong is $k = 589$

The level of significance is $\alpha = 0.01$

The population proportion is $p = 0.75$

Generally the sample proportion is mathematically represented as

$\r p = \frac{k}{n}$

=> $\r p = \frac{589}{745}$

=> $\r p = 0.79$

The null hypothesis is $H_o : p = 0.75$

The alternative hypothesis is $H_a : p \ne 0.75$

The standard error is mathematically represented as

$SE = \sqrt{\frac{p(1-p)}{n} }$

=> $SE = \sqrt{\frac{0.75(1-0.75)}{745} }$

=> $SE =0.0159$

Generally the test statistics is mathematically represented as

$t = \frac{\r p - p }{SE}$

=> $t = \frac{0.79 - 0.75 }{0.0159}$

=> $t = 2.51$

Generally the p-value is mathematically represented as

$p-value = 2 * P(Z > 2.51)$

From the the z-table

$P(Z > 2.51) = 0.0060366$

=> $p-value = 2 * 0.0060366$

=> $p-value = 0.01207$

From the calculation $p-value >\alpha$

Hence we fail to reject the null hypothesis

Thus there no sufficient evidence to conclude that 75% of adults say that it is morally wrong to not report all income on tax returns

7 0

3 years ago

You want to determine the use of a graphing calculator on a test. is it Experimental or Observational

bija089 [108]

experimental I think probably

5 0

2 years ago

Ben is saving 1/5 of his weekly pay to buy a car. Right and solve an equation to find what weekly pay W results in savings of $6

lesya [120]

To solve this problem, all we have to do is to closely analyze the situation. Now we are given that the amount of saving per week is equivalent to one fifth (1 / 5) of Ben’s weekly pay (or weekly salary).

Now we are to find the weekly pay or weekly salary that result in weekly savings of $61.50. So we can see that actually the value of 61.50 is one fifth (1 / 5) of W, therefore:

(1/ 5) W = 61.50

W = 5 * 61.50

W = $307.5

Therefore a weekly pay of $307.5 will result in a weekly savings of $61.50

4 0

3 years ago

Three boats are at sea Jenny one(j1) Jenny two(j2) and Jenny three (j3). The crew of j1 can see both j2 and j3 (they create a tr

4vir4ik [10]

Answer:

Step-by-step explanation:

You know an angle, the side opposite the angle, and the side between them.

Use the Law of Sines.

j3 = arcsin(2.7sin(j1)/4.2) ≅ 27.0°

j2 = 180°-j1-j3 ≅ 108.0°

x = distance from j1 to j2

= 4.2sin(j2)/sin(j1)

≅ 5.7 miles

5 0

2 years ago