2 years ago

The dot plots show the number of hours a lightbulb lasts from two different brands.

Mathematics

1 answer:

Talja [164]2 years ago

7 0

Answer:

Step-by-step explanation:

because brand a is obvioulsy higher than brand b and if you look closely to the algorithms your answer should be D

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Alexxandr [17]

Answer:

The value of the test statistic is $t = 2.67$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 7.8$

The alternate hypotesis is:

$H_{1} \neq 7.8$

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem, we have that:

$X = 8.2, \mu = 7.8, \sigma = 0.6, n = 16$

Then

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{8.2 - 7.8}{\frac{0.6}{\sqrt{16}}}$

$t = 2.67$

The value of the test statistic is $t = 2.67$

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2 years ago

suppose you buy 158,000 home. you found out the bank offers 30 year loan at 6.5% APR. What will he your monthly payment

serg [7]

Answer: $998.67

Step-by-step explanation:

M = P[r(1+r)^n/((1+r)^n)-1)]

This does not include taxes, insurance, or PMI

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Hoochie [10]

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Read 2 more answers

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Vanyuwa [196]

Answer:

<6 and <4

Step-by-step explanation:

Complemetary angles are angles that their measure add up to 90 degrees

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