Mathematics, 15.06.2021 08:30 Ezekielcassese
The scores on a standardized mathematics test for
8th-grade children in New York State form a normal
distribution with a mean of µ ! 70 and a standard
deviation of $ ! 10.
a. What proportion of the students in the state have
scores less than X ! 75?
b. If samples of n ! 4 are selected from the
population, what proportion of the samples will
have means less than M ! 75?
c. If samples of n ! 25 are selected from the
population, what proportion of the samples will
have means less than M ! 75?
Answers: 2
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 13:30, kaylatunell123
Lindsay is creating a bridge out of dried pasta and glue. in her plans, she sketches the graph to determine the lengths of the noodles, in centimeters, needed for the arch to increase the length of the bridge in 1 centimeter increments. which function did lindsay use to create her design? f(x) = (x – 5)2 + 8 f(x) = –(x + 5)2 + 8 f(x) = 0.5(x + 5)2 + 8 f(x) = –0.5(x – 5)2 + 8
Answers: 1
Mathematics, 21.06.2019 14:00, williams5847
Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?
Answers: 1
Mathematics, 21.06.2019 16:30, milkshakegrande101
Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?
Answers: 1
You know the right answer?
The scores on a standardized mathematics test for
8th-grade children in New York State form a norma...
Questions in other subjects:
History, 30.01.2020 02:44
English, 30.01.2020 02:44
