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jarptica [38.1K]
3 years ago
12

Manufacturing and Product Development A A typical washing machine has several different cycles, including soak, wash, and rinse.

The energy consumption of a washing machine is linked to the length of each cycle. A random sample of 21 washing machines was obtained, and the length (in minutes) of each wash cycle was recorded. The summary statistics are x 37.8 and cycle times is normal. a. Find a 90% confidence interval for the true mean wash cycle time. Write a Solution Trail for this problem
Mathematics
1 answer:
mars1129 [50]3 years ago
4 0

Answer:

Explained

Step-by-step explanation:

here std error =std deviation/(n)^1/2 =1.2875

for 90% CI; at 21 degree of freedom =1.7247

hence confidence interval =mean +/- t*std error =35.579 ; 40.021

b) this interval gives 90% probability to contain true mean of population of wash cycle time

c)that interval would be wider as value of t will be greater for larger interval

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Nookie1986 [14]

The linear function of the table of values is y = -1.5x + 25

<h3>How to plot the ordered pairs?</h3>

The table of values is given as:

<u>Sequence One       Sequence Two       Ordered Pair         </u>

6                                         16                           (6, 16)

8                                         13                           (8, 13)

10                                        10                           (10, 10)

12                                         7                            (12, 7)

14                                         4                            (14, 4)

From the above table of values, we can see that:

  • As x constantly increases by 2 i.e. +1
  • y constantly decreases by 3 i.e. -3

This means that the table represents a linear function, and the slope of the function is

m = -3/+2

This gives

m = -1.5

A linear function is represented as:

y = mx + c

This gives

y = -1.5x + c

Using the table of values, we have

16 = -1.5 * 6 + c

Evaluate the product

16 = -9 + c

Add 9 to both sides

c = 25

Substitute c = 25 in y = -1.5x + c

y = -1.5x + 25

Hence, the linear function of the table of values is y = -1.5x + 25

See attachment for the graph of the table

Read more about linear functions at:

brainly.com/question/4025726

#SPJ1

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I telling u the answer

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The answer is 20, because it goes up every time.
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