Answer:
second option
Step-by-step explanation:
Given
f(x) = (x - 7)(x + 4)(3x - 2)
To find the zeros let f(x) = 0, that is
(x - 7)(x + 4)(3x - 2) = 0
Equate each factor to zero and solve for x
x - 7 = 0 ⇒ x = 7
x + 4 = 0 ⇒ x = - 4
3x - 2 = 0 ⇒ 3x = 2 ⇒ x =
zeros are x = - 4, x = , x = 7
Answer:
<em>The calculated value |Z| = |-2.5| >2.326 at 0.05 level of significance</em>
<em>The alternative hypothesis is accepted at a 0.05 level of significance</em>
The manager of Publix in Clemson believes 64% is too high for his own store
Step-by-step explanation:
<u><em>Step:-1</em></u>
Given that the consumer Reports showed that 64% of supermarket shoppers.
Given that the population proportion
P = 0.64
Given that random sample size 'n' = 100
Given that 52 believe the supermarket brands were as good as the national brands.
<em>sample proportion</em>
<em> </em><em></em>
<u><em>Step:-2</em></u>
<u><em>Null hypothesis: </em></u>The manager of the Publix in Clemson believes 64% is too low for his own store
μ < 0.64
<u><em>Alternative Hypothesis:H₁:</em></u>μ > 0.64
Test statistic
Z = -2.5
<em>Level of significance = 0.05</em>
<em>Z₀.₀₅ = 2.326</em>
<em>The calculated value |Z| = |-2.5| >2.326 at 0.05 level of significance</em>
<u><em>Final answer</em></u><em>:-</em>
<em>The null hypothesis is rejected at a 0.05 level of significance</em>
<em>The alternative hypothesis is accepted at a 0.05 level of significance</em>