Suppose that in a random selection of 100 colored candies, 21% of them are blue. the candy company claims that the percentage of blue candies is equal to 28%. use a 0.05 significance level to test that claim.

The percentage of blue candies is equal to 28%.

Step-by-step explanation:

Sample size = n = 1000

21% of them are blue

So, No. of blue candies =

Claim : The percentage of blue candies is equal to 28%.

We will use one sample proportion test  

Formula of test statistic =

                                       =

                                       =−1.55

Now refer the p value from the z table

p value =0.0606

α =0.05

So, p value >  α

So, we failed to reject null hypothesis

So, the percentage of blue candies is equal to 28%.

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