3 years ago

Find the average of -1/8,3/4,3/4,-1/2

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Answer:

7/32

Step-by-step explanation:

Sum is:

-1/8 + 3/4 + 3/4 - 1/2 =
-1/8 + 6/4 - 1/2 =
-1/8 + 12/8 - 4/8 =
(-1 + 12 - 4)/8 =
7/8

Number is 4

Average is:

sum/number =
7/8 : 4 =
7/32

You might be interested in

A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

nexus9112 [7]

Answer:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

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

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

$p_v =2*P(z$

8 0

3 years ago

Katherine drove 112 miles in 4 hours. If she continued at the same rate, how far

antoniya [11.8K]

The answer would be 420 miles

8 0

3 years ago

Read 2 more answers

A cube has edge length 5in use a exponent to express volume

My name is Ann [436]

5 cubed ( or an exponent of three )

4 0

3 years ago

Read 2 more answers

Add. (5y - 1) + (-2y + 4) A) 3y - 5 B) 3y + 3 C) 7y + 3 D) 7y - 3

Ivan

(5y - 1) + (-2y + 4) = 5y - 1 - 2y + 4
= 5y - 2y - 1 + 4
= 3y + 3 [OPTION B]

8 0

3 years ago

The tax rate is 3.9%. What is the tax on $42?

grigory [225]

Answer:

$43.64

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers