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2 years ago

Select the correct answer.

Mathematics

2 answers:

goldfiish [28.3K]2 years ago

7 0

Answer:

<h2>B. The number of boxes manufactured depends on the number of hours.</h2>

Step-by-step explanation:

The graph shows that as more time passes, more boxes are being manufactured. Therefore, the number of boxes relies on the number of hours.

Hope this helps :)

Elena-2011 [213]2 years ago

5 0

Answer:

Step-by-step explanation:

the graph does not mention pens (exept in the title)

so not c or d

so it has to be A

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Suppose a consumer group suspects that the proportion of households that have three cell phones NOT known to be 30%. A cell phon

leva [86]

Answer:

We conclude that the actual percentage of households is equal to 30%.

Step-by-step explanation:

We are given that a consumer group suspects that the proportion of households that have three cell phones NOT known to be 30%.

Their marketing people survey 150 households with the result that 43 of the households have three cell phones.

Let p = proportion of households that have three cell phones NOT known.

So, Null Hypothesis, $H_0$ : p = 30% {means that the actual percentage of households is equal to 30%}

Alternate Hypothesis, $H_A$ : p $\neq$ 30% {means that the actual percentage of households different from 30%}

The test statistics that would be used here One-sample z-test for proportions;

T.S. = $\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of households having three cell phones = $\frac{43}{150}$ = 0.29

n = sample of households = 150

So, the test statistics = $\frac{0.29-0.30}{\sqrt{\frac{0.30(1-0.30)}{150} } }$

= -0.27

The value of z test statistic is -0.27.

Also, P-value of the test statistics is given by;

P-value = P(Z < -0.27) = 1 - P(Z $\leq$ 0.27)

= 1 - 0.6064 = 0.3936

Now, at 1% significance level the z table gives critical value of -2.58 and 2.58 for two-tailed test.

Since our test statistic lies within the range of critical values of z, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.

Therefore, we conclude that the actual percentage of households is equal to 30%.

4 0

3 years ago

HEELP WILL AWARD BRAINLIEST AND GIVE 5 STARS AND 10 POINTS I JUST NEED AN ANSWER STAT

kvasek [131]

Hi so if you can put the side ac away for sec and look at sides ab bc you can see the ab is 15 In. And that Side Bc is 22 inches 15 +22 = 37 round it off to 39 that is the answer ac is 39 inches hope i helped

6 0

3 years ago

What is the degree of the monomial -2 show all work!

Leni [432]

-2 is a degree 0 polynomial with 1 term and 0 variables

3 0

3 years ago

36in rounded to the nearest tenth for circumference

WITCHER [35]

Answer: Remember that the tens place is two moves to the left of the decimal point (if it exists). To round to the nearest ten (nearest 10), we use the whole numbers place to determine whether the tens place rounds up or stays the same.

Solution steps:

Step 1: Locate and underline the tens place () and look to digit to the right (6):

Step 2: In this case, the digit to the right 6 is 5 or above. So, we add 1 to the tens place (). The digit(s) after the (6) are dropped. Thus, we get 40 as answer.

In short: 36 rounded to the nearest tens is 40.

Step-by-step explanation:

8 0

2 years ago

How many meat balls are required for a party of 10 adults and 5 children

ohaa [14]

The formula for this is m = 4a + 2c, where c = number of children; m = number of meatballs; a = number of adults.

m = (4 x 10) + (2 x 5)
simplify,
40 + 10 = 40
The answer to this is 40 meatballs.

3 0

3 years ago