Question

A
food safety guideline is that the mercury in fish should be below 1
part per million (ppm). Listed below are the amounts of mercury
(ppm) found in tuna sushi sampled at different stores in a major
city. Construct a 99% confidence interval estimate of the mean
amount of mercury in the population. Does it appear that there is
too much mercury in tuna sushi?

0.62 , 0.76 , 0.10 , 0.94 , 1.38 , 0.51 , 0.95

Answer #1

Mean X̅ = Σ Xi / n

X̅ = 5.26 / 7 = 0.7514

Sample Standard deviation SX = √ ( (Xi - X̅ )2 / n - 1 )

SX = √ ( 0.9701 / 7 -1 ) = 0.4021

Confidence Interval

X̅ ± t(α/2, n-1) S/√(n)

t(α/2, n-1) = t(0.01 /2, 7- 1 ) = 3.707

0.7514 ± t(0.01/2, 7 -1) * 0.4021/√(7)

Lower Limit = 0.7514 - t(0.01/2, 7 -1) 0.4021/√(7)

Lower Limit = 0.188

Upper Limit = 0.7514 + t(0.01/2, 7 -1) 0.4021/√(7)

Upper Limit = 1.3148

**99% Confidence interval is ( 0.188 , 1.3148 )**

**Since the upper limit of confidence interval is greater
than 1, hence we conlude that there is too much mercury in tuna
sushi.**

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 98% confidence interval estimate of the
mean amount of mercury in the population. Does it appear that there
is too much mercury in tuna sushi?
0.51 0.77 0.10 0.94 1.28 0.49 0.96
ppm < μ < ppm

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 99% confidence interval estimate of the
mean amount of mercury in the population. Does it appear that there
is too much mercury in tuna sushi?
0.55 0.76 0.09 0.88 1.33 0.51 0.85
What is the confidence interval estimate of the...

food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 95% confidence interval estimate of the
mean amount of mercury in the population. Does it appear that there
is too much mercury in tuna sushi?
0.60 0.78 0.10 0.95 1.26 0.54 0.94 What is the confidence
interval estimate of the population...

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a
95%
confidence interval estimate of the mean amount of mercury in
the population. Does it appear that there is too much mercury in
tuna sushi?
0.53
0.71
0.10
0.94
1.27
0.53
0.93

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 99%confidence interval estimate of the mean
amount of mercury in the population. Does it appear that there is
too much mercury in tuna sushi?
0.62, 0.71, 0.10, 0.93, 1.32, 0.56, 0.80
what is the confidence interval estimate of the population...

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a
99% confidence interval estimate of the mean amount of mercury
in the population. Does it appear that there is too much mercury in
tuna sushi?
0.58
0.74
0.11
0.94
1.25
0.52
0.82

A food
safety guideline is that the mercury in fish should be below 1 part
per million? (ppm). Listed below are the amounts of mercury? (ppm)
found in tuna sushi sampled at different stores in a major city.
Construct a 98% confidence interval estimate of the mean amount of
mercury in the population. Does it appear that there is too much
mercury in tuna? sushi?
0.57,
0.75, 0.10, 0.95, 1.27, 0.54, 0.89

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 99%
confidence interval estimate of the mean amount of mercury in
the population. Does it appear that there is too much mercury in
tuna sushi?

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 98% confidence interval estimate of the
mean amount of mercury in the population. Does it appear that there
is too much mercury in tuna sushi?
0.51 0.80 0.10 0.96 1.35 0.54 0.92
What is the confidence interval estimate of the...

A food safety guideline is that the mercury in fish should be
below 1 part per million (ppm). Listed below are the amounts of
mercury (ppm) found in tuna sushi sampled at different stores in a
major city. Construct a 98 % confidence interval estimate of the
mean amount of mercury in the population. Does it appear that there
is too much mercury in tuna sushi? 0.59 0.76 0.11 0.97
1.36 0.52 0.96

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