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xxMikexx [17]
3 years ago
12

A streaming music site changed its format to focus on previously unreleased music from rising artists. the site manager now want

s to determine whether the number of unique listeners per day has changed. before the change in format, the site averaged 131,520 unique listeners per day. now, beginning three months after the format change, the site manager takes a random sample of 30 days and finds that the site now has an average of 124,247 unique listeners per day. the manager finds that the p-value for the hypothesis test is approximately 0.0743. what can be concluded at the 95% confidence level?
Business
1 answer:
pishuonlain [190]3 years ago
4 0

Answer : The p-value of 0.0743 is greater than alpha at 0.05; so we fail to reject the null hypothesis and conclude that there is no significant difference in the number of unique users before and after a change in policy.

In this question, the manager wants to know if the number of users has changed.

So, the null and alternate hypotheses are:

Null Hypothesis: {H_{0}}: \mu = 131,520

Alternate Hypothesis : {H_{1}}: \mu \not\equiv 131,520

Type of test : Two-tailed test

The level of significance is 95%

We can calculate alpha (α) as follows:

\alpha = 1- Confidence Level

\alpha = 1- 0.95
\alpha = 0.05

The p value = 0.0743.

We use the following rules to arrive at a conclusion when p-values and alpha is given:

If p-value < \alpha, reject the null hypothesis

If p-value \geq \alpha, we don't reject the null hypothesis.

Since the p-value is greater than alpha, we don't reject the null hypothesis.

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Digiron [165]

Answer:

The answer is opportunity cost

Explanation:

Opportunity cost is the cost of an alternative forgone action. The cost of an action not taken. For example, Mr A had the chance to choose between job X and job Y, if he chooses job X, the salary that job Y will pay if he had chosen them will be the opportunity cost.

Therefore, the amount of income that would result from an alternative use of cash is the OPPORTUNITY COST.

7 0
3 years ago
Beginning inventory, purchases, and sales for Item Widget are as follows: Mar. 1 Inventory 200 units at $8 9 Sale 175 units 13 P
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Answer:

Instructions are listed below

Explanation:

Giving the following information:

Mar. 1 Inventory 200 units at $8

Mar. 9 Sale 175 units

Mar. 13 Purchase 160 units at $9

Mar. 25 Sale 150 units

Assuming a perpetual inventory system and using the first-in, first-out (FIFO) method

Cost of goods sold= 25 units*$8 + 125units*9= $1325

Ending inventory= 35units* 9= $315

5 0
3 years ago
When the LA Galaxy played soccer in a stadium that seated 80,000-90,000 fans, many of the available tickets to each game went un
MaRussiya [10]

Answer:

d) Inventory

Explanation:

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4 0
3 years ago
What are the characteristics of open and honest communication?
earnstyle [38]

Answer:

being open and honest builds a sense of self-worth. It is about being moral, truthful to yourself and with others.

Explanation:

4 0
3 years ago
Although the Chen Company’s milling machine is old, it is still in relatively good working order and would last for another 10 y
SCORPION-xisa [38]

Keeping the appropriate cash flow in the cash flow register, using a financial calculator, NPV should be calculated for taking the decision.

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Increase in annual after-tax cash flows : CF = $9000

Place the cash flow on a time line:

0 1 2 10

I 10 I I . . . I

-110000 19000 19000 19000

With a financial calculator, input the appropriate cash flow into the cash flow register, input I/YR = 10, and then solve for NPV. The answer for NPV is $6746.78.

Thus, Chen should buy a new machine.

5 0
3 years ago
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