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2 years ago

Determine whether the function f(x) = 8(0.61)^x shows exponential growth or decay

Mathematics

1 answer:

grandymaker [24]2 years ago

7 0

I think the answer is decay

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The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand

alexira [117]

Answer:

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

t = 1.076

Step-by-step explanation:

Step(i):-

Given Mean of the Population (μ) = 8.0

Mean of the sample (x⁻) = 8.25

Given data

8,9,9,8,8,9,8,7

Given sample size n= 8

Given sample standard deviation(S) = 0.661

Step(ii):-

Null hypothesis : H: (μ) = 8.0

Alternative Hypothesis :H:(μ) > 8.0

Degrees of freedom = n-1 = 8-1=7

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }$

t = 1.076

Critical value

t₍₇,₀.₀₅₎ = 2.3646

The calculated value t = 1.076 < 2.3646 at 0.05 level of significance

Null hypothesis is accepted

Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0

3 0

3 years ago

Help please god help

oksian1 [2.3K]

yikes i remember doing this but.... i completely forgot ;–; i really wish i could help

4 0

2 years ago

BD is the angle bisector of ZABC.

mojhsa [17]

Answer:

B:25°

Step-by-step explanation:

Now $\angle ABC$ gets bisected by $BD$ .

$\angle ABD=25^{\circ}$

Since, the angle is bisected, this means that the angle is split into two equal parts or the angle is halved.

We know that one of the angles is $25^{\circ}$ so the other angle has to be $25^{\circ}$ also.

Hence, the $m\angle DBC=25^{\circ}$ .

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2 years ago

A store normally sells a floor lamp for $83.99. The store is having a sale that reduces the lamp's price by 15%. How much does t

-Dominant- [34]

The answer should be $71.39

4 0

2 years ago

Which of the following point is a solution to:x-4=-5

HACTEHA [7]

Answer:

-1

Step-by-step explanation:

If you add 4 to both sides you get

x-4+4=-5+4

the -4and+4 cancel out so you get

x=-1

4 0

2 years ago

Read 2 more answers