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mote1985 [20]
2 years ago
6

This circle graph shows the results of a survey that asked 80 people which method of transportation they use to get to the city

park.
How many people take the bus to the city park?



20 people


25 people


32 people


40 people




bus 40%
car 25%
bike 25%
walk 10%
Mathematics
1 answer:
Aleksandr-060686 [28]2 years ago
7 0

Answer:

D)32

Step-by-step explanation:

Divide 80/100 x 40=32

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It is generally claimed that the average body temperature for healthy human adults is 98.6°F. To test this claim a simple random
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Answer:

Explained below.

Step-by-step explanation:

The information provided is as follows:

\mu=98.6^{o}F\\\bar x=98.1^{o}F\\s=0.9^{o}F\\n=9

(1)

A single mean test is to be performed in this case.

As the population standard deviation is not provided, a one-sample <em>t</em>-test will be used.

The correct option is b.

(2)

The null hypothesis is:

<em>H</em>₀: The average temperature in the population is 98.6°F, i.e. <em>μ </em>= 98.6°F.

The correct option is b.

(3)

The alternative hypothesis is:

<em>Hₐ</em>: The average temperature in the population is less than 98.6°F, i.e. <em>μ </em>< 98.6°F.

The correct option is c.

(4)

The standard deviation of the sample mean is as follows:

SD_{\bar x}=\frac{s}{\sqrt{n}}=\frac{0.9}{\sqrt{9}}=0.3^{o}F

Thus, the value of SD is 0.3°F.

(5)

Compute the value of test statistic as follows:

t=\frac{\bar x-\mu}{SD_{\bar x}}

  =\frac{98.1-98.6}{0.3}\\\\=-1.666666667\\\\\approx -1.67

Thus, the value of test statistic is -1.67.

(6)

The degrees of freedom of the test are:

df = n - 1

   = 9 - 1

   = 8

Thus, the degrees of freedom of the test is 8.

8 0
3 years ago
When pouring water from one five gallon bucket to another, a person tends to pour at a faster rate at first and then slow down i
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I will assume that 0.62 is an exponent   then

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10 divided by 2= 5 Each person will get 5 punch
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