Some sellers of used cars provide warranties to buyers, with the aim of reassuring buyers that the car is of good quality.
Answer:
The test statistic t of the sample is -0.804.
There is sufficient evidence to ascertain that the average number of years of work experience of MBA applicants is less than 3 years.
Explanation:
Null hypothesis: The average number of years of work experience of MBA applicants is 3 years.
Alternate hypothesis: The average number of yet of work experience of MBA applicants is less than 3 years.
Test statistic (t) = (sample mean - population mean) ÷ sd/√n
sample mean = 2.57
population mean = 3
sd = 3.67
n = 47
t = (2.57 - 3) ÷ 3.67/√47 = -0.43 ÷ 0.535 = -0.804
Assuming a 5% significance level
degree of freedom = n - 1 = 47 - 1 = 46
The critical value corresponding to 46 degrees of freedom and 5% significance level is 2.013.
Conclusion:
Reject the null hypothesis because the test statistic -0.804 is less than the critical value 2.013.
The years of work experience of MBA applicants is less than 3.
Answer:
Elastic demand
Unit elastic demand
Inelastic demand
Explanation:
Elasticity of demand measures the degree of responsiveness of quantity demanded to changes in price.
Elasticity of demand = percentage change in quantity demanded/ percentage change in price.
Denand is elastic if when price is increased, the quantity demanded changes more than the increase in price. Quanitity demanded is more sensitive to changes in price.
If price is increased, the quantity demanded falls and as a result the total revenue earned by sellers falls.
The elasticity of demand is usually greater than 1 when demand is elastic.
Demand is unit elastic if a change in price has the same proportional change on quantity demanded. The coefficient of elasticity is equal to one.
If price is increased, the quantity demanded changes by the same proportion so there's no change in total revenue of sellers.
Demand is inelastic if a change in price has little or no effect on quantity demanded.
Coefficient of elasticity is usually less than one.
If price is increased, there is little or no change in the quantity demanded and as a result the revenue earned by sellers increase.
I hope my answer helps you
Money supply = Currency in circulation + Checkable deposits.=600 + 900 = 1500 Billion
Current deposit ratio = Currency in Circulation/ Checkable deposits. = 600/900 = .667
Excessive reserve ratio = Excess Reserves/Checkable deposits.= 15/900 = .0167
Money multiplier = (1 + C)/(rr + ER + C)= (1 + .667)/ (.0278 + .0167 + .667) = 2.343
Answer:
b. bb and BB
Explanation:
For example, pattern of baldness is dominant in man and recessive in female. This is because the gene for baldness (B) in heterozygous state (Bb) expresses itself in male but not in female. It means gene B for baldness behaves as a dominant in male and as a recessive in female. In man due to influence of male sex hormone, a single gene for this trait can cause loss of hair.
But in woman (due to the absence of the male sex hormone) two genes are required to produce baldness.
BB or Bb = Bald in males
bb = not bald in male
BB = Bald in females
Bb or bb = not bald in females
Non-bald womam (bb; XX) x Bald man (BB; XY)
XB BY
Xb XX; Bb (non-bald daughter) XY; Bb (bald son)
