me 0.05 level of significance, is the oup 1 be the males, and let group - Ho: ₁2₂ На: П1 <П2

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K
Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 18% of males and 50% of females make an impulse purchase every time they shop.
Assume that the survey consisted of 400 males and 400 females. Complete parts (a) and (b) below.
to search
a. At the 0.05 level of significance, is there evidence of a difference in the proportion of males and females who make an impulse purchase every time they shop?
Let group 1 be the males, and let group 2 be the females. State the null and alternative hypotheses. Choose the correct answer below.
OA. Ho: ₁2₂
Н1: П1 <П2
OC. Ho: 1₂
H₁: ₁ = ₂
OE. Ho: ₁₂
H₁: Jy ≤₂
Calculate the test statistic.
XSTAT =
#10 밥
C
L
CHEFEND
+
OB. Ho: ₁₂
H₁: ₁ #₂
OD. Ho: ₁₂
H₁:₁₂
OF. Ho: <₂
H₁: ₁2₂
fo 144
fio
86°F
Transcribed Image Text:K Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 18% of males and 50% of females make an impulse purchase every time they shop. Assume that the survey consisted of 400 males and 400 females. Complete parts (a) and (b) below. to search a. At the 0.05 level of significance, is there evidence of a difference in the proportion of males and females who make an impulse purchase every time they shop? Let group 1 be the males, and let group 2 be the females. State the null and alternative hypotheses. Choose the correct answer below. OA. Ho: ₁2₂ Н1: П1 <П2 OC. Ho: 1₂ H₁: ₁ = ₂ OE. Ho: ₁₂ H₁: Jy ≤₂ Calculate the test statistic. XSTAT = #10 밥 C L CHEFEND + OB. Ho: ₁₂ H₁: ₁ #₂ OD. Ho: ₁₂ H₁:₁₂ OF. Ho: <₂ H₁: ₁2₂ fo 144 fio 86°F
K
arch
Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 18% of males and 50% of females make an impulse purchase every time they shop.
XSTAT =
(Round to three decimal places as needed.).
Determine the critical value.
The critical value is
(Round to three decimal places as needed.)
State the conclusion.
the null hypothesis. There is
evidence at the 0.05 level of significance to conclude that there is a difference in the proportion of males
and females who make an impulse purchase every time they shop.
b. Find the p-value in (a) and interpret its meaning.
The p-value is
(Round to three decimal places as needed.)
#10
(...)
10
86°F
VSIA
Transcribed Image Text:K arch Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 18% of males and 50% of females make an impulse purchase every time they shop. XSTAT = (Round to three decimal places as needed.). Determine the critical value. The critical value is (Round to three decimal places as needed.) State the conclusion. the null hypothesis. There is evidence at the 0.05 level of significance to conclude that there is a difference in the proportion of males and females who make an impulse purchase every time they shop. b. Find the p-value in (a) and interpret its meaning. The p-value is (Round to three decimal places as needed.) #10 (...) 10 86°F VSIA
Expert Solution
Introduction
statistical hypothesis test used to evaluate whether two proportions are different from one another is the two-proportion Z-test. 
The null hypothesis for the test is that the two proportions are equal, and Z-statistics are obtained from two independent samples.

 

 

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