5. A medical research company states that the mean life expectancy of adult females is 81.2 years. In a study of 23 randomly selected female adults in a nursing home, the data is normally distributed with a mean of 78.7 years and a standard deviation of 4.7 years. Use a 0.02 significance level to test the claim that the mean lifespan of adult females is less than 81.2 years. a. Identify the null and alternate hypotheses. b. Calculate the test statistic. Round to three decimal places. STA c. Determine the range of p-values.

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12/23/20
$51.68
Past Due
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STATE
call 8
ceive
5. A medical research company states that the mean life expectancy of adult females is 81.2
years. In a study of 23 randomly selected female adults in a nursing home, the data is
normally distributed with a mean of 78.7 years and a standard deviation of 4.7 years. Use a
0.02 significance level to test the claim that the mean lifespan of adult females is less than
81.2 years.
nts:
A TEXAS INSTRU
a. Identify the null and alternate hypotheses.
STAT PLOT F1
TBLSET
Y=
WINDO
b. Calculate the test statistic. Round to three decimal places.
QUIT
2nd
MO
A-LOCK
LINK
ALPHA
TEST
ANG
MATH
MATRX D. SIN
c. Determine the range of p-values.
x2
10%
N U
LOG
LN
d. Make a decision about the null hypothesis.
RCL
STO
OFF
ON
e. Restate the decision in a sentence.
atio
contact you
w allows.
he telepho
Transcribed Image Text:12/23/20 $51.68 Past Due Due STATE call 8 ceive 5. A medical research company states that the mean life expectancy of adult females is 81.2 years. In a study of 23 randomly selected female adults in a nursing home, the data is normally distributed with a mean of 78.7 years and a standard deviation of 4.7 years. Use a 0.02 significance level to test the claim that the mean lifespan of adult females is less than 81.2 years. nts: A TEXAS INSTRU a. Identify the null and alternate hypotheses. STAT PLOT F1 TBLSET Y= WINDO b. Calculate the test statistic. Round to three decimal places. QUIT 2nd MO A-LOCK LINK ALPHA TEST ANG MATH MATRX D. SIN c. Determine the range of p-values. x2 10% N U LOG LN d. Make a decision about the null hypothesis. RCL STO OFF ON e. Restate the decision in a sentence. atio contact you w allows. he telepho
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