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Alexeev081 [22]
3 years ago
6

It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sam

ple mean for a random sample of 100 cars is 27.2 miles and assume the standard deviation is 2.4 miles. Now suppose the car producer wants to test the hypothesis that μ, the mean number of miles per gallon, is 25.9 against the alternative hypothesis that it is not 25.9. Conduct a test using α=.05 by giving the following:
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
7 0

Answer:

Step-by-step explanation:

Given that the sample mean for a random sample of 100 cars is 27.2 miles and assume the standard deviation is 2.4 miles.

H0: x bar = 25.9

Ha: x bar ≠ 25.9

(Two tailed test at 95% confidence)

Alpha =0.05

The hypothetical mean is 25.900  

The actual mean is 27.200  

The difference between these two values is 1.300  

The   95% confidence interval of this difference:  

From -3.462 to 6.062

t = 0.5417  

 df = 99  

 standard error of difference = 2.400

The two-tailed P value equals 0.5893  

 Since p >0.05 this difference is considered to be not statistically significant.  

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A coffee shop spends $408 for an order of 17 cases of paper cups.
solong [7]

Answer:

Option C is correct

$528 will the total cost spends by coffee shop

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity of 1, such as 3 feet per second or 7 miles per hour, they are called unit rates.

As per the statement:

A coffee shop spends $408 for an order of 17 cases of paper cups.

Unit rate per cases = \frac{408}{17} =\$24

Now, if If the coffee shop adds 5 more cases of paper cups to the order

then,

total number of cases = 17 +5 = 22 cases

To find how much  total cost coffee shop spends.

Total cost = unit rate \times total number of cases

                 = 24 \times 22 = \$528

Therefore, total costs coffee shop spends = $528

3 0
3 years ago
Read 2 more answers
What is 52% of 25 if you answer your the first to answer you get 25 points
adoni [48]

Answer:

13

Step-by-step explanation:

convert 52% into a decimal which is 0.52 then mulitply by 25 to get your answer

5 0
3 years ago
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Division of two quantities is expressed as the ____ of those two quantities.
andreev551 [17]


Division of two quantities is expressed as the  quotient of those two quantities.

The word quotient is derived from the Latin language. It is from the Latin word "quotiens" which means "how many times." A quotient  is the answer to a divisional problem. A divisional problem describes how many times a number will go into another. The first time that this word was known to have been used in mathematics was around 1400 - 1500 AD in England.

There are two different ways to find the quotient of two numbers.  One of them is through Fractions. The quotient of a fraction is the number obtained when the fraction is simplified. The other way to find a quotient is  by employing the long division method where the quotient  value is positioned above the divisor and dividend.
 


6 0
3 years ago
Which numbers should replace the question marks?
slava [35]

The first missing number in the sequence is 35, and the last missing number is 77.

<h3>Next number of the given sequence</h3>

The two missing numbers in the given sequence is calculated as follows;

= ?    49     63    ?

The given sequence is factor 7 which increases by 2

= 7 x 5      7 x 7       7 x 9     7 x 11

= 35         49          63          77

Thus, the first missing number in the sequence is 35, and the last missing number is 77.

Learn more about sequence here: brainly.com/question/6561461

#SPJ1

7 0
2 years ago
Evaluate the expression when x=3, y= -4, and z= -6 <br><br> xy<br> _<br> z
NeTakaya
The answer is probably 2 because if you plug in the numbers you would get 
3x-4=-12 divided by -6 = +2.
3 0
3 years ago
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