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3 years ago

5

A random sample of 27 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯ = 940 and the

sample standard deviation is s = 15. Use Appendix D to find the values of Student's t.

1 answer:

babunello [35]3 years ago

5 0

Answer:

t value= 99%

Step-by-step explanation:

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3 years ago

Read 2 more answers

A company finds it can produce 5 heaters for $2000, while producing 15 heaters costs $4600. Express the cost, y, as a linear fun

grandymaker [24]

Answer:

y = 260x + 700
$5900

Step-by-step explanation:

<u>We can describe it as a linear function with points of:</u>

(5, 2000) and (15, 4600)

<u>Slope intercept formula:</u>

y = mx +b

<u>Finding the slope using the two given points:</u>

m = (4600-2000)/(15-5) = 2600/10 = 260

<u>Finding b:</u>

2000 = 5*260 + b

b = 2000 - 1300 = 700

<u>Formula obtained:</u>

y = 260x + 700

<u>For x = 20, value of y is:</u>

y = 260*20 + 700 = 5200+700 = $5900

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3 years ago