Mathematics, 15.07.2019 21:30 TayJoker966
Astatistics student would like to estimate the average age of students at her college. she would like to be 99% confident that her estimate includes the actual college population mean. she did a smaller preliminary survey and found that a reasonable estimate of the population standard deviation was 2 1/2 years. how many people must she survey if she wants to be within 1/2 year of the true population mean? round off your answer to the nearest integrer.
Answers: 1
Mathematics, 21.06.2019 20:00, alisonlebron15
An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years
Answers: 1
Mathematics, 21.06.2019 22:00, victordguerrero2535
Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of
Answers: 1
Mathematics, 22.06.2019 04:00, jakijakicarrillo12
Miguel has one foot of string. he cuts the string into fourths. how many inches is each piece of string?
Answers: 1
Astatistics student would like to estimate the average age of students at her college. she would lik...
Biology, 09.10.2021 14:00
Mathematics, 09.10.2021 14:00
Mathematics, 09.10.2021 14:00
Geography, 09.10.2021 14:00
Social Studies, 09.10.2021 14:00