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patriot [66]
3 years ago
11

The Blue Diamond Company advertises that their nut mix contains (by weight) 40% cashews, 15% Brazil nuts, 20% almonds and only 2

5% peanuts. The truth-in-advertising investigators took a random sample (of size 20 lbs) of the nut mix and found the distribution to be as follows:
5 lbs of Cashews,
6 lbs of Brazil nuts,
6 lbs of Almonds and 3 lbs of Peanuts.
A. At the 0.05 level of significance, is the claim made by Blue Diamond true?
Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0

Answer:

At the 0.05 level of significance,  the claim made by Blue Diamond is true

Step-by-step explanation:

Given that the Blue Diamond Company advertises that their nut mix contains (by weight) 40% cashews, 15% Brazil nuts, 20% almonds and only 25% peanuts.

H_0: The mix are as per percents given\\H_a:Atleast two differ from the above percent.

(Two tailed chi square test at 5% significance level)

Chi square is calculated as (Obs_exp)^2/Expected

Cashews Brazil nuts Almonds Peanuts Total

Observed 5 6 6 3 20

Expected  40% 15% 20% 25% 1

Expected  8 3 4 5 20

     

Chi square 1.125 3 1 0.8 5.925

df = 3

p value = 0.1153

Since p value >0.0 we accept null hypothesis.

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The larger the sample size, the closest the parameter estimate is to the value of the population, as the margin of error of confidence intervals is inversely proportional to the sample size, that is, a greater sample leads to a smaller margin of error.

Thus, you should select the highest sample size in the options.

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6 0
3 years ago
1/4 +1/3 divided by4/5
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Answer:

2/3

Step-by-step explanation:

Do 1/3 divided by 4/5 first.

So we are going to flip 4/5 to 5/4. The equation is now:

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1/3 times 5/4 = 5/12

Now we have to add 1/4+5/12

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How can the probability of an event help make predictions
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3 0
3 years ago
Oscar has $30 from his allowance. There is a video game he wants to buy that costs $17.99, a chocolate bar that costs $0.79 and
Airida [17]

Answer:

Balance = \$2.23

Step-by-step explanation:

Given

Allowance = \$30

Video\ Game = \$17.99

Chocolate\ Bar = \$0.79

Remote\ Car = \$8.99

Required [Missing from the question]

What is his balance after purchasing the items

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Total =Video\ Game + Chocolate\ Bar + Remote\ Car

Total = \$17.99 + \$0.79 + \$8.99

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The balance is then calculated as:

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Balance = \$2.23

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3 years ago
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