The number of tourists coming to
has surged in the last 5 years. A researcher wants to know
in the country’s two major tourist destinations,
Agadir and Marrakesh, are affected by this surge. He surveys a
sample of 1
hotels in Agadir and
hotels in Marrakesh
and asks them about their
occupancy rates in the month
of April. He found the following results.
Sample Standard deviation (s)
From these results, does the researcher have enough evidence to conclude that occupancy rates in Marrakech and
Agadir are different (at 5% significance level)?
wants to compare the political participation amongst the youth in Rabat and Casablanca.
He interviews a sample of
5 young people (21
30) in Rabat and found that
of them vote in elections. He also
interviewed a sample of 1
young people in C
ca and found that only
of them vote
Does the researcher have enough evidence
to conclude that political participation
amongst the youth is different in Rabat and
wants to compare the age variability of the
audiences of two popular TV
operas: one Turkish and the other Mexican.
total sample of 2
0 women and found that
the Mexican program
who are regular followers
were then asked their ages and the results are as follow:
ean age of audience
tandard deviation of age of audience
significantly different between the audiences of the 2 soap operas?
The National Transportation Safety Board
publishes statistics on the number of automobile
According to these statistics
24 had an accident rate of
14%, which is much higher than those for other age groups
since young drivers have become more careful.
He surveyed 56
24 and found
had an accident
Can the researcher reject
’s claim at
0.05 significance level?
According to the Moroccan Office National des Chemins de Fer (ONCF), the direct train between Casablanca
and Fez takes an average of 3 hours and 36 m
inutes to reach its destination, with a standard deviation of 12
Recently, train schedules have been changed in Morocco and the ONCF wants to know if this has
affected the ability of its trains to be
in their arrival times
. It surveye
d a random sample of
travelling from Casablanca to Fez and found that the standard deviation
is 17.25 minutes.
Is there enough evidence, at
0.05 level of significance, to suggest that the
new scheduling ha
ability of the Casablanca
Fez train to be