in-a-study-of-20002000-patients-researchers-recorded-both-the-actual-and-estimat

Question

In a study of $2000$ patients, researchers recorded both the actual and estimated number of hours slept per night. For each patient, the difference (actual minus estimated) was computed. The sample mean of the differences is $negative 0.3$ hours, and the sample standard deviation is $1.2$ hours. Test whether there is a significant difference between actual and estimated sleep hours at the $0.05$ significance level. What is the $p$ -value for this hypothesis test?

Accepted Answer

$p equals 0$

There is a significant difference between actual and estimated sleep hours.

Answer

$p equals 0$

There is a not significant difference between actual and estimated sleep hours.

Answer

$p equals 0$

There is a significant difference between actual and estimated sleep hours.

Answer

$p equals 0$

There is no significant difference between actual and estimated sleep hours.