Question

A researcher knows that the weights of 6-year-olds are normally distributed with u = 20.9 kg and o = 3.2. She suspects that children in poverty-stricken regions are undernourished and therefore underweight. With a sample of n = 16 children, the researcher obtains a sample mean of M = 18.3. Use a one-tailed test with = .01 to determine if the weights for this sample are significantly lower than what would be expected for the regular population of 6-year-olds

Answer #1

A researcher knows that the weights of 6 year olds are
normally distributed with μ = 20 kg and
σ = 5.0. She suspects that children in poverty-stricken
regions differ from the population. With a sample of n = 25
children, the researcher obtains a mean of 17
kg.
a. State the null hypothesis.
b. Identify the appropriate statistical test
c. Calculate the appropriate test statistic. Make sure to report
the degrees of freedom for the statistical test (if appropriate)....

a.
State the null hypothesis.
b.
Identify the appropriate statistical test
c.
Calculate the appropriate test statistic. Make sure to report the
degrees of freedom for the statistical test (if appropriate). You
must show your work to receive full credit.
d.
State your conclusions (use a two-tailed test with a = .05 for all
tests).
e.
Compute an effect size.
A researcher knows that the weights of 6 year olds are normally
distributed with m = 20 kg and s...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 47 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago