Mathematics, 26.03.2020 22:37, jazprincezz5373
A poll is to be conducted to find out how many books, on average, Canadians read. You are the person who is to select a random sample and to ask the people of the sample about the number of books they read in the previous year. How many people are needed for your sample to estimate the number of books within 3 books with 90% confidence? Assume that it is known that the standard deviation for number of books read by Canadians is 14.1 books
Answers: 1
Mathematics, 21.06.2019 16:50, gesic2003
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
Answers: 3
Mathematics, 21.06.2019 18:00, cici170
Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).
Answers: 2
Mathematics, 21.06.2019 18:00, chloejaylevesque
Jada has a monthly budget for her cell phone bill. last month she spent 120% of her budget, and the bill was 60$. what is jada’s monthly budget
Answers: 2
A poll is to be conducted to find out how many books, on average, Canadians read. You are the person...
Mathematics, 04.02.2020 03:58
Mathematics, 04.02.2020 03:58
Mathematics, 04.02.2020 03:58
Geography, 04.02.2020 03:58
Mathematics, 04.02.2020 03:58