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insens350 [35]
3 years ago
9

For the given​ data, (a) find the test​ statistic, (b) find the standardized test​ statistic, (c) determine the​ p-value, and​ (

d) decide whether you should reject or fail to reject the null hypothesis. the samples are random and independent. ​claim: mu 1μ1less than
Mathematics
1 answer:
Feliz [49]3 years ago
6 0
<span>You should reject or fail to reject the null hypothesis. the samples are random and independent. ​claim: mu 1μ1less than 50.</span>
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The population of a town is 20,000 and is decreasing at a rate of 5% per year. What is the population after 23 years?
AVprozaik [17]
I believe the answer should be approximately 6,147 because you would plug into the equation y=20,000(.95)^t, where t=23.
6 0
3 years ago
The perimeter of a rectangle is 158 cm. If the length is 7 more than 3 times the width:
Goryan [66]
Width of rectangle = x
Length =3x+7
Perimeter of rectangle = 158cm
2(l+w)=158
2(3x+7+x)=158
2(4x+7)=158
8x+14=158
8x=158-14
x=144/8
x=18
Therefore the width of the rectangle is 18cm
Length=3x+18+7
54+7=61cm
Area=lxw
=61x18
=1098^2
8 0
3 years ago
Principle 1600, rate 6 ,time 2.5 years find CI​
shutvik [7]

Answer:

C.I = $251.2

Step-by-step explanation:

P = Principal amount = 1600

r = rate of annual interest = 6%

n = period / no. of years = 2.5 years

C.I = (P* (1+r^n))-P

C.I = (1600*(1+0.06)^2.5))-1600

C.I = (1600*(1.06^2.5))-1600

C.I = (1600*1.157)-1600

C.I = 1851.2-1600

C.I = 251.2

5 0
3 years ago
A babysitter earns the same amount per hour. She earned $36 for 3 hours of babysitting. Which equation describes the relationshi
Brilliant_brown [7]

Answer:

y= 12x

Step-by-step explanation:

36/3=12

12× x =y

________________________

6 0
3 years ago
After the schedule adjustment, the first 36 runs were an average of 8 minutes late. As a result, the Boston public school distri
aev [14]

Answer:

The value of test statistic is -2.

Step-by-step explanation:

The following information is missing in the question.

The population mean is 12 minutes.

We are given the following in the question:

Population mean, μ = 12 minutes

Sample mean, \bar{x} = 8 minutes

Sample size, n = 36

Population standard deviation, σ = 12 minutes

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{8 - 12}{\frac{12}{\sqrt{36}} } = -2

The value of test statistic is -2.

6 0
3 years ago
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