Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959.

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Child Health and Development Studies (CHDS) has been collectingdata about expectant mothers in Oakland, CA since 1959. One of themeasurements taken by CHDS is the age of first time expectantmothers. Suppose that CHDS finds the average age for a first timemother is 26 years old. Suppose also that, in 2015, a random sampleof 50 expectant mothers have mean age of 26.5 years old, with astandard deviation of 1.9 years. At the 5% significance level, weconduct a one-sided T-test to see if the mean age in 2015 issignificantly greater than 26 years old. Statistical software tellsus that the p-value = 0.034. Which of the following is the mostappropriate conclusion?
There is a 3.4% chance that mean age for all expectant mothersis 26 years old in 2015.
There is 3.4% chance that the population of expectant motherswill have a mean age of 26.5 years old or greater in 2015 if themean age for all expectant mothers was 26 years old in 1959.
There is a 3.4% chance that a random sample of 50 expectantmothers will have a mean age of 26.5 years old or greater if themean age for a first time mother is 26 years old.
There is a 3.4% chance that mean age for all expectant mothersis 26.5 years old in 2015