Answer:
At least 315
Step-by-step explanation:
A journalist intends to find the average annual salary of CEOs within the S&P 1,500. Due to time constraints, a sample is used.
Standard deviation of the sample (s) = 449300
Sample size = n
Permissible margin of error = 50000
Z critical value = 1.96
Thus, 1.96 times the standard error equals 50000.
Standard error equals 25510.20
Standard deviation divided by the square root of n = 25510.20
By simplifying, we can derive:
Thus, the minimum sample size required is 315.
30 candles equal 100%
30% of 100% equals 9 candles from a total of 100 candles
After extinguishing 30% of the candles, 9 will remain lit.
Determine the percentage of families who spent: a. Under $167 daily. b. Under $367 daily. c. Over $247 daily. d. Over $350 daily. e. Under $67 daily. f. Between $200 and $300 daily. g. Between $360 and $400 daily. h. Exceeding the median. i.
Answer:
Step-by-step explanation: The error made by the student was dividing the wins by the losses.
The student should have divided the wins by the total number of games played.
Initially, the student ought to have summed 20 and 10 to conclude there were 30 games in total.
