3. dr. silas studies a culture of bacteria under a microscope. the function represents the number of bacteria t hours after dr. silas begins her study.

(a) what does the value 1200 represent in this situation?
(b) what does the value 1.8 represent in this situation?
(c) the number of bacteria in a second study is modeled by the function .
what does the value of 1000 represent in this situation?
what does the difference of 1200 and 1000 mean between the two studies?

i believe the answers are
a) 1200 represents the initial culture number of bacteria.
b) 1.8 represents the growth rate of the bacteria per hour
c) (this is the one i need on)

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.