Last season a baseball play hit 48 home runs. So far this season he has hit 30 home runs. The number of home runs he has hit so
1 answer:
Answer:
The home runs hit this season is <u>62.5%</u> of the home runs hit last season.
Step-by-step explanation:
Given:
Runs hit last season = 48
Runs hit this season so far = 30
So, in order to find the percentage of home runs hit this season so far compared to the last season, we need to divide the home runs hit this season by that of the last season and then express the result as a percentage by multiplying the fraction with 100.
Therefore,
Percentage of home runs scored this season is given as:
Therefore, the home runs hit this season is 62.5% of the home runs hit last season.
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Answer:
Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)
Step-by-step explanation:
Let us find out the mean savings for a televisit to the doctor from the given data.
Using Excel,
=AVERAGE(number1, number2,....)
The mean is found to be
Let us find out the standard deviation of savings for a televisit to the doctor from the given data.
Using Excel,
=STDEV(number1, number2,....)
The standard deviation is found to be
The confidence interval is given by
Where the margin of error is given by
Where n is the sample of 20 online doctor visits, s is the sample standard deviation and is the t-score corresponding to a 95% confidence level.
The t-score is given by is
Significance level = α = 1 - 0.95 = 0.05/2 = 0.025
Degree of freedom = n - 1 = 20 - 1 = 19
From the t-table at α = 0.025 and DoF = 19
t-score = 2.093
So, the margin of error is
So the required 95% confidence interval is
Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)
