Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 522 randomly selected adults showed that 64% of them would erase all of their personal information online if they could. Find the value of the test statistic.

6.3972

Step-by-step explanation:

This is a normal distribution problem.

-We claim that most adults are more likely to erase their data;

-The test statistic for a stated hypothesis  for proportions is given by the formula:

Given the size of the random sample is 522 and that 62% of them are susceptible to erasing their data.

-Let be the sample proportion. The value of the test statistic :

Hence, the test statistic is z=6.3972

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

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