The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 696 drowning deaths of children with 30% of them attributable to beaches. Find the value of the test statistic z.

The test statistic Z = 3.125

Step-by-step explanation:

Given Population proportion P = 0.25

Given sample size 'n' = 696

Sample proportion 'p⁻' = 0.30

Test statistic

Final answer:-

The test statistic Z = 3.125

The value of the test statistic z is 3.05.

The standard deviation is

= 0.0164

Now

the value of test statistics is

= 3.05

Therefore we can conclude that The value of the test statistic z is 3.05.

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the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents