Question

H0:μ=11.8H0:μ=11.8

H1:μ<11.8H1:μ<11.8

Your sample consists of 306 subjects, with a mean of 11.5 and
standard deviation of 4.72.

Calculate the test statistic, rounded to 2 decimal places.

Answer #1

this is the left tailed test .

The null and alternative hypothesis is ,

H0 : = 11.8

Ha : < 11.8

Test statistic = z

= ( - ) / / n

= (11.5-11.8) / 4.72/ 306

= -1.11

Testing:
H0:μ=6.915
H1:μ≠6.915
Your sample consists of 101 subjects, with a mean of 6.6 and
standard deviation of 3.77.
Calculate the test statistic, rounded to 2 decimal places.
t=_______________

H0:μ=12.7H0:μ=12.7
H1:μ<12.7H1:μ<12.7
Your sample consists of 34 subjects, with a mean of 12.5 and
standard deviation of 1.42.
Calculate the test statistic, rounded to 2 decimal places.
t=t=

Testing: H0:μ= 38.375 H1: μ> 38.375 Your sample consists of
40 subjects, with a mean of 39.9 and a sample standard deviation
(s) of 4.65. Calculate the test statistic, rounded to 2 decimal
places. t=?

Testing:
H0:μ=15.08H0:μ=15.08
H1:μ>15.08H1:μ>15.08
Your sample consists of 25 subjects, with a mean of 15.2 and
standard deviation of 2.24.
Calculate the test statistic, rounded to 2 decimal places.
t=

1.
H 0 : p = 0.73
H 1 : p ≠ 0.73
Your sample consists of 83 subjects, with 59 successes.
Calculate the test statistic, rounded to 2 decimal places z
=_________________
2.
Testing:
H0:μ=27.5
H1:μ<27.5
Your sample consists of 22 subjects, with a mean of 26.1 and
standard deviation of 4.55.
Calculate the test statistic, rounded to 2 decimal places.
t=__________

Testing:
H0:p=0.5369H0
H1:p≠0.5369
Your sample consists of 93 subjects, with 49 successes. Calculate
the test statistic, rounded to 2 decimal places
z=

Testing: H 0 : μ = 31.685 H 1 : μ ≠ 31.685 Your sample consists
of 46 subjects, with a mean of 32.2 and standard deviation of 2.03.
Calculate the test statistic, rounded to 2 decimal places. t
=______

H0:p=0.69H0:p=0.69
H1:p<0.69H1:p<0.69
Your sample consists of 129 subjects, with 95 successes. Calculate
the test statistic, rounded to 2 decimal places
z=

Testing:
H0:p=0.81H0:p=0.81
H1:p≠0.81H1:p≠0.81
Your sample consists of 115 subjects, with 88 successes. Calculate
the test statistic, rounded to 2 decimal places
z=____

Given the following hypotheses: H0: μ = 450 H1: μ ≠ 450 A random
sample of 11 observations is selected from a normal population. The
sample mean was 456 and the sample standard deviation 5. Using the
0.10 significance level:
1. State the decision rule. (Negative amount should be indicated
by a minus sign. Round your answers to 3 decimal places.)\
Reject H0 when the test statistic is _______inside or
outside____, and interval is _____, ______
2. Compute the value...

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