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Sliva [168]
3 years ago
9

Claim: Fewer than 92% of adults have a cell phone. In a reputable poll of 1207 adults, 85% said that they have a cell phone. Fin

d the value of the test statistic,
Round to two decimal places as needed
Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

- 6.547

Step-by-step explanation:

Given that:

Sample size (n) = 1207

p = 0.85

p0 = 0.92

The test statistic :

Z = (p - p0) / √(p0(1 - p0) / n)

Z = (0.85 - 0.92) / √(0.92(1 - 0.85) / 1207)

Z = - 0.07 / √(0.92(0.15) / 1207)

Z = - 0.07 / √0.0001143

Z = - 0.07 / 0.0106926

Z = - 6.5465446

Z = - 6.547

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3 years ago
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6 0
3 years ago
Tom Harding is a proofreader. He is paid $0.23 for every page he proofs. What is Tom's total pay for a week in which he proofrea
natka813 [3]
Alrighty, what I was always taught was to start by writing out what you know from the question.

What I know:
-Tom is paid $0.23 for every page of proofs.
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Therefore, Tom made $458.16.

Hope this helps!

3 0
3 years ago
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4 0
3 years ago
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8_murik_8 [283]

Answer:

See explanation below.

Step-by-step explanation:

The equation is:

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This is the equation of a line in slope intercept form. The general form, where m is the slope and b is the y intercept is:

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In this case, with the equation:

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