Question

if x bar =86 , s =9 and n=69 , construct a 95% confidence level interval estimate of the population mean. ( round two decimal places)

blank is less than or equal to m that is less than or equal to blank

Answer #1

if x bar = 86, s= 9 and n=69, construct a 95% confidence
interval estimate of the population mean?
round two decimals places

1. If n=19, ¯xx¯(x-bar)=34, and s=12, construct a confidence
interval at a 95% confidence level. Assume the data came from a
normally distributed population.
Give your answers to one decimal place.
2. In a survey, 11 people were asked how much they spent on
their child's last birthday gift. The results were roughly
bell-shaped with a mean of $50 and standard deviation of $15.
Construct a confidence interval at a 90% confidence level.
Give your answers to one decimal place....

If n=28,
x¯(x-bar)=36,
and s=16, construct a confidence interval at a 95% confidence
level. Assume the data came from a normally distributed
population.
Give your answers to one decimal place.
__________ <
μ
< ________________

If n=28,
x¯(x-bar)=36,
and s=16, construct a confidence interval at a 95% confidence
level. Assume the data came from a normally distributed
population.
Give your answers to one decimal place.
__________ <
μ
< ________________

1) If n=19, ¯xx¯(x-bar)=33, and s=18, construct a confidence
interval at a 80% confidence level. Assume the data came from a
normally distributed population.
Give your answers to one decimal place.
< μμ <
2) You measure 48 backpacks' weights, and find they have a mean
weight of 44 ounces. Assume the population standard deviation is
2.8 ounces. Based on this, construct a 95% confidence interval for
the true population mean backpack weight.
Give your answers as decimals, to two...

Construct a 95% confidence interval to estimate the population
mean when x=122 and s =28 for the sample sizes below.
a) n=30 b) n=70 c) n=90
a) The 95% confidence interval for the population mean when
n=30 is from a lower limit of to an upper limit of. (Round to two
decimal places as needed.)
b) The 95% confidence interval for the population mean when
n=70 is from a lower limit of to an upper limit of . (Round to...

If n=27, ¯ x (x-bar)=46, and s=9, find the margin of error at a
95% confidence level (use at least two decimal places)
If n=19, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a
95% confidence level (use at least two decimal places)
If n=16, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a
99% confidence level (use at least three decimal places)

a) If n=10, ¯xx¯(x-bar)=33, and s=10, construct a confidence
interval at a 80% confidence level. Assume the data came from a
normally distributed population.
Give your answers to one decimal place.
< μμ <
b) In a survey, 27 people were asked how much they spent on
their child's last birthday gift. The results were roughly
bell-shaped with a mean of $46 and standard deviation of $8. Find
the margin of error at a 99% confidence level.
Give your answer...

If n=18, ¯ x (x-bar)=48, and s=6, construct a confidence
interval at a 98% confidence level. Assume the data came from a
normally distributed population. Give your answers to one decimal
place

If n=20, ¯ x (x-bar)=44, and s=15, construct a confidence
interval at a 98% confidence level. Assume the data came from a
normally distributed population.
Give your answers to one decimal place. < μ <

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