Mathematics, 18.01.2021 22:30 DeathFightervx
An investment website can tell what devices are used to access the site. The site managers wonder whether they should enhance the facilities for trading via "smart phones" therefore they want to estimate the proportion of users who access the site that way. They draw a random sample of 200 investors from their customers. Suppose that the true proportion of smart phone users in 36%. What is the probability that the sample proportion is between 0.30 and 0.40? Hint: You'll need to find one z-score for 0.30 and another for 0.40. Then find the area between the two z-scores.
Answers: 2
Mathematics, 21.06.2019 13:30
The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.
Answers: 3
Mathematics, 21.06.2019 15:00
Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? Β© {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}
Answers: 2
Mathematics, 21.06.2019 20:00
Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !
Answers: 2
An investment website can tell what devices are used to access the site. The site managers wonder wh...
English, 23.09.2019 08:30
Biology, 23.09.2019 08:30
Mathematics, 23.09.2019 08:30
Arts, 23.09.2019 08:30
English, 23.09.2019 08:30
Mathematics, 23.09.2019 08:30
Mathematics, 23.09.2019 08:30
History, 23.09.2019 08:30
Biology, 23.09.2019 08:30
Mathematics, 23.09.2019 08:30