Mathematics, 06.11.2020 19:40 DantesinfernoxD9964
A television newscaster from a 24-hour news station wants to estimate the number of hours per day its viewers
watch programming on this channel. The newscaster randomly selects 100 viewers and asks them how many hours
per day they watch this station. The newscaster constructs an 85% confidence interval for the true mean number of
hours viewers watch this station. Which of the following would decrease the margin of error?
using a sample of size 50
O using a sample of size 200
O constructing a 90% confidence interval
O constructing a 95% confidence interval
Answers: 1
Mathematics, 21.06.2019 16:00
65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.
Answers: 3
Mathematics, 21.06.2019 20:30
Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
Mathematics, 21.06.2019 22:10
Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9
Answers: 3
A television newscaster from a 24-hour news station wants to estimate the number of hours per day it...
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