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4 years ago

Solve for x. 4 = log2x

Mathematics

2 answers:

Murrr4er [49]4 years ago

6 0

The answer should be x =3

gtnhenbr [62]4 years ago

3 0

$log_2 X=4$
This is asking what can you raise 2 to in or order to get 4.
X=2

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A sample of 1500 computer chips revealed that 37% of the chips fail in the first 1000 hours of their use. The company's promotio

andreyandreev [35.5K]

Answer:

$z=\frac{0.37 -0.39}{\sqrt{\frac{0.39(1-0.39)}{1500}}}=-1.59$

Step-by-step explanation:

Data given and notation

n=1500 represent the random sample taken

$\hat p=0.37$ estimated proportion of of chips fail in the first 100 hours

$p_o=0.39$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the actual percentage that fail is different from the stated percentage. Find the value of the test statistic.:

Null hypothesis: $p=0.39$

Alternative hypothesis: $p \neq 0.39$

When we conduct a proportion test we need to use the z statisitc, and the is given by:

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

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.37 -0.39}{\sqrt{\frac{0.39(1-0.39)}{1500}}}=-1.59$

3 0

3 years ago

14 miles in 4 hour what is average rate of speed

disa [49]

3.5 mph is the answer

4 0

3 years ago

Read 2 more answers

Can someone translate these into equations?!?!

Mila [183]

_ ÷ 7=9

_ - 12=0

25 ÷ 3=y

1/5×r=15

(2 × y) - 6 =34

5 0

4 years ago

Read 2 more answers

Charlie wants to swim across a river that's is 400 meters wide. He begins swimming perpendicular to the shore he from but ends u

nirvana33 [79]

Let's calculate Charlie swimming distance. Assume Charlie swimming distance is D.
D^2 = 400^2 + 100^2 => D = 412 meters

Assume d is Carter's distance.
d^2 = 400^2 + 150^2 => d = 427 meters

Carter swims more than Charlie by:
d - D = 427 - 412 = 15 meters

4 0

3 years ago

Gina has 7 2/6 ft of silver ribbon and 2 4/6 of gold ribbon how much more silver ribbon does Gina have than gold ribbon?

salantis [7]

Answer:

Gina has 5 more feet of silver ribbon than gold

Step-by-step explanation:

7 - 2 =5

7 0

3 years ago