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3 years ago

HELP PLZ and hurry thank you

Mathematics

1 answer:

sergejj [24]3 years ago

4 0

|-2 2/3| = 0 - (-2 2/3)

= 2 2/3 answer

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find the area of the circle .Leave your answer in terms of pie (3.14) the area is 4.1m .I need help on this question

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The area of a circle = pi x radius^2. If the area is 4.1m, then to transfer that into terms of pi you would simply divide 4.1 by pi. Pi is infinite, but is typically simplified to 3.14, 4.1/3.14 = 1.31. So the area in terms of pi is 1.31 x pi.

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255 were laptops.

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3 years ago

Meth Barie's ice cream shop wants to decide whether to introduce a new ice cream flavor. They randomly selected 15 customers at

Marianna [84]

Answer:

Meth Barie's ice cream shop should not introduce the new ice cream flavor.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.01

Sample mean, $\bar{x}$ = 4.4

Sample size, n = 15

Alpha, α = 0.1

Sample standard deviation, s = 1.6 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu \leq 4.01\\H_A: \mu > 4.01$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{4.4 - 4.0}{\frac{1.6}{\sqrt{15}} } = 0.968$

Option B) 0.968

Rejection region:

Now, $t_{critical} \text{ at 0.10 level of significance, 9 degree of freedom } = 1.345$

So the rejection region would be a value of t-statistic greater than 1.345.

Option B) t > 1.345

Conclusion:

Since,

$t_{stat} < t_{critical}$

We fail to reject the null hypothesis and accept the null hypothesis. Meth Barie's ice cream shop should not introduce the new ice cream flavor.

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