Answer:
We fail to reject the Null hypotheses that the average amount of money a typical college student spends per day is less than $70.
Explanation:
A professor of statistics claimed that the average amount of money a typical college student spends per day during social distancing at home is over $70.
Based upon previous research, the population standard deviation is estimated to be $17.32.
The professor surveys 35 students and finds that the mean spending is $67.57.
Is there evidence that the average amount spent by students is less than $70?
For the given problem the Null hypotheses is that the average amount of money a typical college student spends per day is less than $70.
For the given problem the Alternate hypotheses is that the average amount of money a typical college student spends per day is over $70.
The test statistic is given by
Where X_bar is the sample mean spending that is $67.57, μ is the average population spending that is $70, σ is the standard deviation that is 17.32 and n is the sample size that is 35.
The p-value corresponding to the z-score of -0.83 at significance level 0.10 is found to be
p-value = 0.2036
Since 0.2036 > 0.10
We fail to reject the Null hypotheses that the average amount of money a typical college student spends per day is less than $70.
People who patronized liquor sellers are called guests. Before those people can be served, the bar man has to decide whether to sell drinks to them or not. Some factors that make one unqualified to buy drinks include: under-age, intoxication, pregnancy, etc. So, the bar man has to assess the guest and decide whether to sell to him or not. Thus, when you are assessing a guest, you are: considering the age of that person, you are determining whether the customer is already drunk, you are checking if the customer is pregnant, if female, etc. When you are assessing a guest, you are getting information about the behavior of the guest.
Answer:
0.09 or 9%
Explanation:
This question has some irregularities. The correct question should be :
Elinore is asked to invest $4,900 in a friend's business with the promise that the friend will repay $5,390 in one year's time. Elinore finds her best alternative to this investment, with similar risk, is one that will pay her $ 5,341 in one year's time. U.S. securities of similar term offer a rate of return of 7%. What is the opportunity cost of capital in this case?
Solution
Given from the question
Investment (I) = $4,900
Return on investment (ROI) in one year = $5,341
Rate or opportunity cost of capital r is given by
ROI = I × (1 + r)
input the given data
$5,341 = $4,900 (1 + r)
$5,341 = $4,900 + $4,900r
$5,341 - $4,900 = $4,900r
r = ($5,341 - $4,900) / $4,900
r = 0.09
Or 9% in percentage
Linda should be advised to be careful in her reinforcement process so that she will not end up reinforcing the wrong behavior. Reinforce is the strategy of changing someone behavior by changing the consequences that follow the behavior. Reinforcement theory states that behavior is a function of its consequences; a behavior that have positive consequences will occur more often and vice versa