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
bekas [8.4K]
3 years ago
15

A survey asks a random sample of 2500 adults in California if they support an increase in the state sales tax from 7.50% to 7.75

%, with the additional revenue going to education. Let Y denote the number in the sample that say they support the increase. Suppose that 30% of all adults in California support the increase. The mean of Y is:_______
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
3 0

Answer:

E(Y) = 750

Step-by-step explanation:

Given

Sample Size = 2500

Percentage = 30%

Required

Calculate Mean of Y

Mean or Expected Value is calculated as thus;

E(Y) = np

Where E(Y) represents the mean

n represents the sample size (or population)

p represents the success probability

n = 2500 ; p = 30%%

p = \frac{30}{100} = 0.3

So,

E(Y) = 2500 * 0.3

E(Y) = 750

Hence, the mean value of Y is 750

You might be interested in
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary).
baherus [9]
The nth term is 6n+4 and the 40th term is 244
7 0
3 years ago
I need helppppppppppppp
ohaa [14]
Simplify

4ax+12-3ax=25+3a

ax+12=25+3a

ax-3a=25-12

a(x-3)=13
5 0
3 years ago
find two consecutive odd integers such as 65 more than the lesser is four times the greater. The lesser consecutive odd integer
Alex_Xolod [135]

Answer: Lesser = 19, Greater = 21


See picture reply.




6 0
3 years ago
In order for the parallelogram to be a rhombus, x=?
stealth61 [152]

\\ \large\sf\longmapsto x + 15 = 2x - 40 \\ \\ \large\sf\longmapsto x - 2x =  - 40 - 15 \\ \\ \large\sf\longmapsto  - x =   -  55\\ \large\sf\longmapsto x = 55

6 0
2 years ago
Read 2 more answers
Point Lis a centroid of the triangle FWD, If RL = 54 cm, what is RD?
Wittaler [7]

Answer:

RD = 162 cm

Step-by-step explanation:

LD = 2 RL = 2* 54 = 108

RD = RL + LD

RD = 54 + 108

RD = 162 cm

7 0
3 years ago
Other questions:
  • What is Slope and how is it determined from a graph?
    11·1 answer
  • On december 1, victoria company signed a 90-day, 6% note payable, with a face value of $15,000. what amount of interest expense
    8·1 answer
  • How many feet are in 3 miles?
    15·1 answer
  • There are four hundred students as Thompson Middle School. If 54% of the students are female, what is the ratio of female to mal
    11·1 answer
  • Joseph wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each
    9·1 answer
  • The entire rectangle below has an area of .
    11·1 answer
  • Which point is located at (8, 6)? A B C D​
    5·2 answers
  • Can someone help me solve pleaseeeee? Asap
    7·2 answers
  • Please round to nearest hundredth and give explanation.
    7·1 answer
  • Which system of inequalities has no solution ? I’m not sure
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!