Question

Test the hypothesis that most cereals have nine or less grams of SUGAR per serving. Use...

Test the hypothesis that most cereals have nine or less grams of SUGAR per serving. Use the attached cereal sample and a significance level of .05
Sugars
6
8
5
0
8
10
14
8
6
5
12
1
9
7
13
3
2
12
13
7
0
3
10
5
13
11
7
10
12
11
10
6
9
3
13
7
10
14
0
0
Math   Statistics-And-Probability   
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Answer:

For the given data we find the mean and standard deviation using excel ( AVERAGE AND STDEV.S )

Sugars
6
8
5
0
8
10
14
8
6
5
12
1
9
7
13
3
2
12
13
7
0
3
10
5
13
11
7
10
12
11
10
6
9
3
13
7
10
14
0
0
Mean 7.575
SD 4.2720769

Ho: <= 9

Ha: > 9

z = xbar -u/(SD/sqrt(n))

= 9 -7.575/(4.272/sqrt(4))

= 2.11

For P(z<7.575)

= 0.98256

As the p-value > LOS of 0.05

We cannot reject the null hypothesis and conclude that most cereals have nine or less grams of SUGAR per serving

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