Answer:
The calculated χ² = <u> 0.842 </u> does not fall in the critical region χ² ≥ 5.99 so we accept the null hypothesis that all the proportions are equal and there is not enough evidence to doubt the supermarket's claim.
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Step-by-step explanation:
1) We set up our null and alternative hypothesis as
H0: p1= 5/18, p2= 4/18, p3= 9/18
against the claim
Ha: p1≠ 5, p2≠ 4, p3≠ 9
2) the significance level alpha is set at 0.05
3) the test statistic under H0 is
χ²= ∑ (O - E)²/ E where O is the observed and E is the expected frequency
which has an approximate chi square distribution with 2 d.f
4) Computations:
Observed Expected χ²= ∑ (O - E)²/ E
5 5.4 0.0296
4 5.4 0.3629
<u>9 7.2 0.45 </u>
<u>∑ 0.842 </u>
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5) The critical region is χ² ≥ χ² (0.05)2 = 5.99
6) Conclusion:
The calculated χ² = <u> 0.842 </u> does not fall in the critical region χ² ≥ 5.99 so we accept the null hypothesis that all the proportions are equal and there is not enough evidence to doubt the supermarket's claim.
<u />
Answer:
Step-by-step explanation:
Reduce 88/80 to lowest terms
The simplest form of
88
80
is
11
10
.
Steps to simplifying fractions
Find the GCD (or HCF) of numerator and denominator
GCD of 88 and 80 is 8
Divide both the numerator and denominator by the GCD
88 ÷ 8
80 ÷ 8
Reduced fraction:
11
10
Therefore, 88/80 simplified to lowest terms is 11/10.
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Equivalent fractions: 176/160 44/40 264/240 440/400 616/560
More fractions: 176/80 88/160 264/80 88/240 89/80 88/8187/80 88/79
Fractions Simplifier
<u><em>your answer is </em></u>
<u><em>9/36</em></u>
5.71 rounded to the nearest whole number is 6.
I think you should combine like terms
Answer:
C,. 3 3/4
Step-by-step explanation:
length times with times hight
1 1/4 x 1 1/2 x 2
convert everything to same denominator
1 1/4
1 2/4
1 4/4
solve
1 1/4 x 1 2/4 x 1 4/4