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
Ne4ueva [31]
3 years ago
7

A poultry farmer wishes to estimate the average incubation period (the number of days between a hen laying her egg and the time

the egg hatches) for eggs on his farm. He plans to take a sample and make a 98% confidence interval, and would like a margin of error of half a day. It is known that the distribution of incubation lengths has a standard deviation of 1.5 days. How many eggs does he need to sample to create the desired interval
Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0

Answer:

49 eggs.

Step-by-step explanation:

The formula for Margin of Error =

z × standard deviation/√number of samples

z = z score of 98% confidence interval = 2.326

Margin of Error = Half a day = 1/2day = 0.5 day

Standard deviation = 1.5 days

Number of samples = number of eggs he needs to sample = unknown.

Imputing these above values into the formula

Margin of Error = z × standard deviation/√number of samples

0.5 = 2.326 × 1.5/√n

Cross Multiply

0.5 × √n = 2.326 × 1.5

√n = 2.326 × 1.5/0.5

√n = 3.489/0.5

√n = 6.978

Square both sides

(√n)² = 6.978²

n = 48.692484

n ≈ Approximately to the nearest whole number = 49

Therefore, the number of eggs he needs to sample to create the desired interval is approximately to the nearest whole number 49 eggs

You might be interested in
A 2-pound package of hamburger costs $7.00, and you pay
AysviL [449]

Answer:

14. 00 $

Step-by-step explanation:DIVIDE – 3 ½ ÷ ¼ = 14 hamburgers

4 0
2 years ago
Read 2 more answers
David wants to pack 574 cereal bars into bags of 10 and bags of 8 the number of bags of 8 is 2 more than the bags of 10. How man
BabaBlast [244]

Answer: Number of bags of 8. = 33

Number of bags of 10. = 31

Step-by-step explanation:

Let x = Number of bags of 8.

y = Number of bags of 10.

As per given.

8x+10y= 574   (i)

x=y+2 (ii)

Put value of x from (ii) in (i)

8(y+2)+10y= 574\\\\\Rightarrow\ 8y+16+10y=574\\\\\Rightarrow\ 18y=574-16\\\\\Rightarrow\ 18y=558\\\\\Rightarrow\ y=\dfrac{558}{18}\\\\\Rightarrow\ y=18

Put this in (i), x= 31+2=33

Hence,

Number of bags of 8. = 33

Number of bags of 10. = 31

6 0
2 years ago
Surface area???????????
MAVERICK [17]

Answer:

The option B is the correct answer. 79.18 m²

Step-by-step explanation:

Surface area = Base area +  Lateral surface area

Area of triangle = bh/2

b - base and h - height

<u>To find the base area</u>

We can consider the base is a hexagon.

A regular hexagon is a combination of 6 equilateral  triangle

Base area = 6 * area of triangle

base b = 3

<u>To find the height</u>

h =√[(6.2)² - (5.6)₂] = 2.7

Area of triangle bh/2 = (3 * 2.7)/2 = 3.99

Area of base = 23.95

To find lateral surface area

Lateral surface area = 6 * area of triangle

Area of triangle = bh/2 =(3 *6.2)/2 = 9.3

Lateral surface area = 6 * 9.3 = 55.8

<u>To find the total surface area </u>

Total surface area = Base area + lateral surface area = 23.95 + 55.8

= 79.75 m²

Therefore the option B is the correct answer. 79.18 m²

7 0
3 years ago
Free point lang po 50<br>cliam lang po ty​
Sever21 [200]

Answer:

thankyou for points

don't waste your points

3 0
2 years ago
Read 2 more answers
Real answers and explanations ONLY! I’ll name you brainiest if correct
Juli2301 [7.4K]

Answer:

  • 1/10⁶ or 0.000001

Step-by-step explanation:

<u>For every time you have a probability of getting 1 is:</u>

  • P(1) = 1/10

<u>For all 6, the probability of outcome of 1 is:</u>

  • P(1x6) = (1/10)⁶ = 0.000001
8 0
2 years ago
Other questions:
  • Is <br> Angel 1: 60 and angle 2: 30 a complementary angle
    15·2 answers
  • Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1. The vertex is the . The function is inc
    6·2 answers
  • A theater company charges $8.50 per ticket for people of all age groups. If c represents the total number of children who bought
    11·1 answer
  • Halpp me please kind people
    10·1 answer
  • The conversion of a temperature from Celsius to Fahrenheit is represented by the expression below, where C is the temperature in
    10·1 answer
  • Help! Mad, range or Iqr?? <br> (Picture included)
    13·2 answers
  • Which number is irrational -9/5 , square root of 5 , 7/3 or square root of 9
    8·1 answer
  • Complete the equation describing how
    13·1 answer
  • What is the slope for 10,15 and 15,20
    12·1 answer
  • A ladder is 4 feet and 1 inch tall. How tall is it in inches
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!