Answer:
Which unit rate is equivalent to 14 miles per gallon? (1 point
Step-by-step explanation:
i am so glad to hear you are Incredible in messages and please contact us at the free points and see what hi rjha is the most important to you to you amanpreet your support for your support for your child to be a child of your
2-29 it was b but if you lo
Step-by-step explanation:
(a) dP/dt = kP (1 − P/L)
L is the carrying capacity (20 billion = 20,000 million).
Since P₀ is small compared to L, we can approximate the initial rate as:
(dP/dt)₀ ≈ kP₀
Using the maximum birth rate and death rate, the initial growth rate is 40 mil/year − 20 mil/year = 20 mil/year.
20 = k (6,100)
k = 1/305
dP/dt = 1/305 P (1 − (P/20,000))
(b) P(t) = 20,000 / (1 + Ce^(-t/305))
6,100 = 20,000 / (1 + C)
C = 2.279
P(t) = 20,000 / (1 + 2.279e^(-t/305))
P(10) = 20,000 / (1 + 2.279e^(-10/305))
P(10) = 6240 million
P(10) = 6.24 billion
This is less than the actual population of 6.9 billion.
(c) P(100) = 20,000 / (1 + 2.279e^(-100/305))
P(100) = 7570 million = 7.57 billion
P(600) = 20,000 / (1 + 2.279e^(-600/305))
P(600) = 15170 million = 15.17 billion
Answer:
the two groups differed in their attitudes toward advertising, significantly
Step-by-step explanation:
given that until recently a number of professions were prohibited from advertising. In 1977, the U.S. Supreme Court ruled that prohibiting doctors and lawyers from advertising violated their right to free speech. The paper "Should Dentists Advertise?" Journal of Advertising Research, June 1982) compared the attitudes of 101 consumers and 124 dentists to the questions "I favor the use of advertising by dentists to attract new patients".
Hypotheses would be
H-0: the groups do not differ
H-a: The two groups differ significantly
(two tailed chi square test)
Observed
Group Strongly agree Agree Neutral Disagree Strongly disagree Total
Consumers 34 47 9 6 5 101
Dentists 9 18 23 28 46 124
Expected is calculated as row total * column total / grand total for each cell
chi square = (obs - exp)^2/Exp for each cell added
chi square = 79.2716
rxc 5x2
df = 4x1 =4
p value <0.00001
Since p < alpha say 0.01, we reject null hypothesis.
the two groups differed in their attitudes toward advertising, significantly
