1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Musya8 [376]
3 years ago
10

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SA

T score of first year students at your college. If you would like to limit the margin of error of your 98% confidence interval to 40 points, at least how many students should you sample?
Mathematics
1 answer:
kotegsom [21]3 years ago
3 0

Answer:

I should use at least 304 students

Step-by-step explanation:

Margin error (E) = t × sd/√n

E = 40

sd = 300

confidence level (C) = 98% = 0.98

significance level = 1 - C = 1 - 0.98 = 0.02 = 2%

t-value corresponding to 2% significance level and infinity degree of freedom is 2.326

n = (t×sd/E)^2 = (2.326×300/40)^2 = 17.445^2 = 304 (to the nearest integer)

You might be interested in
In fifteen minutes, greg's sailboat went 3/6 mile, gina's sailboat went 6/6 mile, and Stuart's sailboat went 4/6 mile. Whose sai
Radda [10]
To make this situation easier to understand, you must simplify these fractions.  3/6 is equal to 0.5
6/6 is equal to 1
4/6 is equal to 0.3333 repeating.

With this info we can tell that Gina's sailboat went to longest distant in the fifteen minutes.

Hope this helps! :)
5 0
3 years ago
Read 2 more answers
A cylindrical swimming pool has a diameter of 14 feet and a height of 5 feet. How many gallons of water can the pool contain? Ro
Vinvika [58]
The volume of a cylinder is pi*height*radius^2 = pi*5*(14/2)^2 = 769.69 ft^3. To get the total gallons multiply 769.69 ft^3 by 7.5gal/ft^3 to get 5772.6765 gallons or 5773 gallons rounded to nearest whole number.
8 0
3 years ago
7) Explain how to divide $53.56 by 10 WITHOUT USING A CALCULATOR
Sophie [7]

Answer: Okay first think back you surely have divided whole numbers by 10 it is the same with decimals for each 0 in the thing you are dividing it by you move the dot one to the left. So if you divide it by 10 it is 5.356 by 100 it would be 0.5356.

Hence the answer is 5.356.

Step-by-step explanation:

Hope it helps

4 0
2 years ago
Meg's treasure map is on a grid. The map tells Meg to dig a hole five units from point N. Which point represents where Meg could
Nezavi [6.7K]

Answer:

(6,5)

Step-by-step explanation:

7 0
3 years ago
Whats the fraction form for 0.44
Amiraneli [1.4K]
The fraction form is 11/25
Hope this helps!!!!:)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Jonathan makes $27 per hour and works 25 hours per week. Every week, he has to sell 20 items. If he sells more than 20 items in
    8·2 answers
  • For every 3 girls in Mr Hegarty's class there are 4 boys. What is the ratio of girls to boys in the class?
    10·1 answer
  • What is the equation of this graphed line? Enter your answer in slope intercept form in the box.
    5·1 answer
  • I'd love some help on this question. I do not understand how you would go about working this out, so please explain the working
    9·1 answer
  • How do you convert units within a measurement system
    12·1 answer
  • Lumpy an stumpy have 60 rocks althougher. Lumpy has 9 more then twice Stump.How many foes each have?
    11·1 answer
  • DUE SOON
    5·1 answer
  • Convert the following polar-form vectors of the form ⟨r,θ⟩ into component-form vectors of the form ⟨x,y⟩. Your answers should be
    11·1 answer
  • Help pls. Ill give brainliest
    12·2 answers
  • 1. What is the equation in point-slope form of the line that has a slope of 1/3 and passes through the point (12, 5)?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!