A manager is looking at the number of sick days used by
employees in a year.
H0: the average number is 8 or below
H1: the average is over 8
We know that the standard deviation of the number of sick days
used by employees is 2, and we want to test at 10% significance
level.
Say we took a random sample of 50 employees, and checked their
records, and found that the average was 8.1
The manager figures that...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 11; 6; 13;
3; 11; 9; 8; 10. Let X = the number of sick days they took
for the past year. Should the personnel team believe that the mean
number is about 10?...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 11; 6; 13;
5; 9; 9; 6; 8. Let X = the number of sick days they took
for the past year. Should the personnel team believe that the mean
number is about 10?...
The mean number of sick days an employee takes per year
is believed to be about 10. Members of a personnel department do
not believe this figure. They randomly survey 8 employees. The
number of sick days they took for the past year are as follows: 11;
6; 14; 3; 11; 8; 7; 8. Let X = the number of sick days
they took for the past year. Should the personnel team believe that
the mean number is about 10?...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 11; 6; 13;
3; 11; 9; 8; 10. Let X = the number of sick days they took
for the past year. Should the personnel team believe that the mean
number is about 10?...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 11; 5; 15;
3; 10; 10; 8; 9. Let X = the number of sick days they took
for the past year. Should the personnel team believe that the mean
number is about 10?...
The mean number of sick days an employee takes per year is
believed to be about ten. Members of a personnel department do not
believe this figure. They randomly survey eight employees. The
number of sick days they took for the past year are as follows: 12;
4; 15; 3; 11; 8; 6; 8. Test the claim of the personnel team, that
the mean number of sick days per year is less than ten. Ho : μ = Ha
:...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 10; 6; 14;
4; 10; 9; 8; 9. Let X = the number of sick days they took
for the past year. Should the personnel team believe that the mean
number is about 10?...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 12; 6; 15;
5; 11; 10; 6; 8. Let X = the number of sick days they took for the
past year. Should the personnel team believe that the mean number
is about 10?...
The mean number of sick days an employee takes per year is
believed to be about 10. Members of a personnel department do not
believe this figure. They randomly survey 8 employees. The number
of sick days they took for the past year are as follows: 12; 6; 14;
3; 11; 9; 7; 9. Let X = the number of sick days they took for the
past year. Should the personnel team believe that the mean number
is about 10?...