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olganol [36]
3 years ago
10

A researcher is testing a new painkiller that claims to relieve pain in less than 15 minutes, on average. a. State the hypothese

s associated with the researcher's test. b. Describe a Type I error for this situation. c. Describe a Type II error for this situation.
Business
1 answer:
zmey [24]3 years ago
6 0

Answer:

a. H0 : U ≥ 15

   Ha : U < 15

b. Type I error is incorrectly conclude that the pain is reduced in less than 15 minutes.

c. Type II error is fail to conclude that time for pain reduction is less than 15 mints when actually its less than 15 minutes.

Explanation:

Null hypothesis is a statement that is to be tested against the alternative hypothesis and then decision is taken whether to accept or reject the null hypothesis.

Type I error is one in which we reject a true null hypothesis.

Type II error is one in which we fail to reject the null hypothesis that is actually false.

You might be interested in
A food manufacturer reports the following for two of its divisions for a recent year.
Over [174]

Answer and Explanation:

1. Return on investment is

= Operating Income ÷ Average invested Assets

here, average invested assets is

= (Invested assets, beginning + Invested assets, ending) ÷ 2

For Beverage Division

= $349 ÷ (($2,662 + $2,593) ÷ 2)

= $349 ÷ $2,628

= 13.28%

For Cheese Division

= $634 ÷ (($4,455 + $4,400) ÷ 2)

= $634 ÷ $4,428

= 14.32%

2. Profit margin = (Operating income ÷ sales) × 100

For Beverage Division

= ($349 ÷ $2,681) × 100

= 13.02%

For Cheese Division

= ($634 ÷ $3,925) × 100

= 16.15%

3. Investment turnover = Sales ÷ Average Operating Assets

For Beverage Division

= $2,681 ÷ (($2,662 + $2,593) ÷ 2)

= $2,681 ÷ $2,628

= 1.02 times

For Cheese Division, it would be

= $3,925 ÷ (($4,455 + $4,400) ÷ 2)

= $3,925 ÷ $4,428

= 0.89 times

6 0
3 years ago
The perimeter of a rectangle with a width x and a length that is four times the widthA nursery has $55,000 of inventory in dogwo
nalin [4]

The question is incorrect. The correct question is as follows,

A nursery has $55,000 of inventory in dogwood trees and red maple trees. The profit on a dogwood tree is 28% and the profit on a red maple tree is 17%. The profit for the entire stock is 20%. How much was invested in each type of tree?

Answer:

The investment in Dogwood trees is $15000.

The investment in red maple trees is = $40000

Explanation:

To calculate the investment in each type of tree, we will say that x was invested in dogwood trees and the investment in red maple trees was 55000-x.

The profit on the entire investment is calculated as the weighted average of the profit on dogwood trees and profit on the red maple trees. The formula for overall profit can be written as follows,

Overall profit = Investment in dogwood / total investment * profit % on dogwood  +  Investment in red maple / total investment * profit % on red maple

0.2 = x / 55000 * 0.28  +  (55000 - x) / 55000 * 0.17

0.2 = 0.28x / 55000  +  (9350 - 0.17x) / 55000

0.2 = 0.28x + 9350 - 0.17x / 55000

0.2 * 55000 = 0.11x + 9350

11000 = 0.11x + 9350

11000 - 9350 = 0.11x

1650 / 0.11 = x

x = $15000

If x is $15000, this means that the investment in Dogwood trees is $15000.

If x is $15000, this means that the investment in red maple trees is 55000 - 15000 = $40000

4 0
2 years ago
In 2009, the U.S. government imposed a 35% tariff on tires imported from China. (The numbers and equations used here are simplif
Verdich [7]

Answer:

In 2009, the U.S. government imposed a 35% tariff on tires imported from China. (The numbers and equations used here are simplified based on the results of a much more complicated model.) Demand is given by QD = 105 − 1.5P where QD is in millions of tires per year. Supply is QS = 1.5873P − 15.87.

Explanation:

4 0
2 years ago
Wattan Company reports beginning inventory of 11 units at $65 each. Every week for four weeks it purchases an additional 11 unit
larisa86 [58]

Solution:

Activity Units Units cost Cost of Goods Available

Beginning Inventory                11     $65.00      $715

1st week purchase                   11      $66.00     $726

2nd week purchase                 11      $67.00     $737

3rd week purchase                  11      $70.00     $770

4th week purchase                  11      $75.00     $825

Units available for sale            55

Cost of goods available for sale                       $3,773

5 0
3 years ago
Which of the following statements is true about payday loans?????
devlian [24]

Answer:

a.

Explanation:

XSGFKXHIUHDIHGDAOUYGGAOGOAIGHuihifdughoispuhgihgaph

3 0
3 years ago
Read 2 more answers
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