Answer: the answer is 10
Step-by-step explanation: divide the sector area and measure 90 divided by 9 = 10
Answer:
Due to the larger sample size, the confidence interval of the second group will have greater precision for estimating the population mean.
Step-by-step explanation:
Margin of error of a confidence interval:
The equation for the margin of error of a confidence interval has the following format:
In which z is related to the confidence level, is the standard deviation of the population and n is the size of the sample.
From this, we can infer that a larger size leads to a greater precision of the interval, that is, a lesser margin of error.
In this question:
The sample from the first group survey has 49 data values, and from the second group has 81.
Due to the larger sample size, the confidence interval of the second group will have greater precision for estimating the population mean.
Where is the Graph? Need the Graph to answer the question.
Based on the number of seats on the balcony, the number of seats in the theatre are 600 seats.
<h3>What number of seats does the theatre have?</h3>
The balcony is said to have 120 seats and these are 1/5 of the total seats in the theatre.
The total number of seats in the theatre are:
= Number of seats on balcony / Proportion of seats this represents
Solving gives:
= 120 ÷ 1/5
= 120 ÷ 0.2
= 600 seats
Find out more on ratios and proportions at brainly.com/question/11041750.
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