How do i solve this question.

Answers

Answer 1

Answer: try a protractor to solve it

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A publisher reports that 42%42% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 250250 found that 35%35% of the readers owned a particular make of car. Find the value of the test statistic. Round your answer to two decimal places.

Answers

Answer:

$z=\frac{0.35 -0.42}{\sqrt{(0.42(1-0.42))/(250)}}=-2.24$

Step-by-step explanation:

Data given and notation

n=250 represent the random sample taken

$\hat p=0.35$ estimated proportion of readers owned a particular make of car

$p_o=0.42$ is the value that we want to test

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 that the percentage is actually different from the reported percentage.:

Null hypothesis: $p=0.42$

Alternative hypothesis: $p \neq 0.42$

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

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

$z=\frac{0.35 -0.42}{\sqrt{(0.42(1-0.42))/(250)}}=-2.24$

Which scatter plot could have a trend line whose equation is y = x + 15?

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Answer:

I'm going to say it's the third one (bottom left) because it's the only one that has points scattered in the same vicinity as the graph when I plugged in that equation. The line showed was linear and had many points including (0,15), (1, 16), and (2, 17).

Which quadrant would 6,-4 be in ?

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Answer:

Step-by-step explanation:

Two scuba divers are swimming below sea level. The locations of the divers can be represented by -30 feet and -42 feet. Which measure represents the location that is closest to sea level.

Answers

Answer:

the answer is -30 feet

Step-by-step explanation:

that is the answer because -42 is -12 feet lower than -30 feet. plsss give me brainliest plsss

The golden state warriors are playing the cleveland cavaliers on thursday june 1, 2017 in game 1 of the nba championship series. suppose that golden state has a 58% chance of winning the game. nba games cannot end in a tie.

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Answer:

Yeah so then the cavaliers have a 42 percent

Step-by-step explanation:

Answer:

cavaliers have a 42 percent

Step-by-step explanation:

One cell phone company offers a plan that costs $25.99 and includes unlimited night and weekendminutes. Another company offers a plan that costs $14.99 and charges $0.35 per minute during nights
and weekends. For what numbers of night and weekend minutes does the second company's plan cost
more than the first company's plan?

Answers

Answer:

Step-by-step explanation:

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