An instructional video is 7.8 minutes long is the video in second ? how long is it in hours?

What is an equation that models the following situation?

Oksanka [162]

Answer:

b

Step-by-step explanation:

5 0

3 years ago

The circumference of circle a is 3 times greater than the circumference of circle b. If the radius of circle a is 12 meters, wha

Ilya [14]

The radius is half of the circumference so the circumference of circle a is 24 or (12x2). Because circle a is 3 times bigger you take 24 and divide it by three and you get 8 now you have to divide it by 2 because every are looking for radius and 8 is the circumference. 8 divided by 2 equals 4 so the radius of circle b is 4

7 0

3 years ago

Which of the following shows a number as a product of prime numbers in exponential form? Choose all that apply. 32 · 5 · 7 42 ·

Tasya [4]

Uhkyuyuyuuk
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4 0

3 years ago

A study by Consumer Reports showed that 64% of supermarket shoppers believesupermarket brands to be as good as national brands.

Elina [12.6K]

Answer:

$z=\frac{0.614 -0.64}{\sqrt{\frac{0.64(1-0.64)}{145}}}=-0.652$

The p value would be given by:

$p_v =P(z$

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is significantly less than 0.64 at 5% of significance

Step-by-step explanation:

Information given

n=145 represent the random sample taken

X=89 represent the number of people who believed the supermarket brand was as good as the national brand

$\hat p=\frac{89}{145}=0.614$ estimated proportion of people who believed the supermarket brand was as good as the national brand

$p_o=0.64$ is the value to test

$\alpha=0.05$ represent the significance level

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to test if the true proportion is less than 0.64, the system of hypothesis are.:

Null hypothesis: $p \geq 0.64$

Alternative hypothesis: $p < 0.64$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info we got:

$z=\frac{0.614 -0.64}{\sqrt{\frac{0.64(1-0.64)}{145}}}=-0.652$

The p value would be given by:

$p_v =P(z$

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is significantly less than 0.64 at 5% of significance

5 0

3 years ago

INCOME

Neko [114]

Answer:

A tool for planning the spending and saving of income.

Step-by-step explanation:

A budget gets set to someone that has to spend within that amount. Example: If my budget is 20 dollars, I can only spend 20 dollars or less.

5 0

3 years ago