Answer:
The sale this month = 79
Step-by-step explanation:
Let the amount he needs to sell this month = x
Note that number of entries = number of months = 5
To maintain an average sales of 77, the amount of sale in month 5 is determined as follows:
The answer is 16%. 4/25=0.16
The probability that at least one of them has been vaccinated is equal to 98.5% if 65% of the people have been vaccinated.
Considering P to be the probability that at least one is vaccinated and q to be the probability that none of the four are vaccinated; the sum of all the probabilities must equal 1; therefore,
P = 1 - q
As 65% of the population is vaccinated, therefore 35% are not vaccinated. Thus any person has a probability of 0.35 of not being vaccinated;
q = 0.35^4 = 0.015
P = 1 - 0.015
P = 0.985
Converting it into percentage;
P = 0.985 × 100 = 98.5%
Therefore the probability that at least one of them has been vaccinated is calculated to be 98.5%
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Answer:
<h3>The option b) is correct</h3><h3>The width of a confidence interval for one population proportion would decrease, increase, or remain the same as a result is <u>
Increase the value of the sample mean (0.5 point) </u></h3>
Step-by-step explanation:
Given that the width of a confidence interval for one population proportion would decrease, increase, or remains the same.
<h3>
To find the result for the given data :</h3>
By definition we have that "the width for the confidence interval decreases as the sample size increases". The width of the confidence interval increases as same as the standard deviation also increases. The width increases as the confidence level increases between (0.5 towards 0.99999 - stronger).
The width of a confidence interval is affected by 3 measures. they are the value of the multiplier t* , the standard deviation s of the original data, and the sample size of n .
<h3>Therefore the width of a confidence interval for one population proportion would decrease, increase, or remain the same as a result is <u>
Increase the value of the sample mean (0.5 point) </u></h3><h3>Therefore the option b) is correct</h3>
Answer:
2
Step-by-step explanation:
Assuming that you mean x is t, then the answer is 2.
You plug in 15 for y, and you have this: 15t=30
Divided both sides by 15, and you get t = 2
