A TNS poll of 1000 randomly selected adults showed that 460 of them say that public speaking is an activity that they dread most. Shown next is the StatCrunch display resulting from a test of the claim that fewer than half of adults say that public speaking is the activity that they dread most.

Use the normal distribution as an approximation to the binomial distribution Assume α = 0.05 significance level
a. Is the test two-tailed, left-tailed, or right-tailed?
b. What is the test statistic?
c. What is the P-value?
d. What is the null hypothesis, and what do you conclude about it?
e. What is the final conclusion?

Transcribed Image Text:

Hypothesis test resuts: p: proportion of successes for population Ho:p=0.5 HA: p<0.5 Proportion Count Total Sample Prop P.value 0.46 0.015811387-2.529822 0.0057 Std. Err. Z-Stat