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
taurus [48]
2 years ago
11

The time (in number of days) until maturity of a certain variety of tomato plant is Normally distributed with mean μ. You select

a simple random sample of four plants of this variety and measure the time until maturity. The four times, in days, are as follows: 63 69 62 66 with standard deviation 3.16.
Required:
Calculate the 99% confidence interval for population mean μ. Find the closest answer
Mathematics
1 answer:
VLD [36.1K]2 years ago
7 0

Answer: 60.93 < μ < 69.07

Step-by-step explanation: The true mean of a set of data is between an interval of values with a percentage of precision, e.g., a <u>99% confidence interval</u> means we are 99% confident the true mean is between the lower and upper limits.

To find the interval, use

x±z\frac{s}{\sqrt{n}}

z is z-score related to the % of confidence level

In this case, a 99% confidence interval is 2.576

x is sample mean

Calculating:

x=\frac{63+69+62+66}{4}

x = 65

65±2.576\frac{3.16}{\sqrt{4}}

65±4.07

Confidence Interval: 60.93 < μ < 69.07

Meaning that we are 99% sure the population means is between 60.93 and 69.07.

You might be interested in
Helppp!!! Which factor is important to consider when buying a car for commuting long
Bess [88]

Answer:

I'd say maintenance plan.

Step-by-step explanation:

I know I'm super late but maintenance plan is important for long distances incase something goes wrong while you're too far from home or something.

5 0
3 years ago
Is 3(x+x+y) equivalent to 3x+3(x+y)
mote1985 [20]

Answer:

yes

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The function f(x)=−2(0.25)x+1 is shown. Select from the drop-down menus to correctly describe the end behavior of f(x).
Viktor [21]

Answer:

Q1

cos 59° = x/16

x = 16 cos 59°

x = 8.24

Q2

BC is given 23 mi

Maybe AB is needed

AB = √34² + 23² = 41 (rounded)

Q3

BC² = AB² - AC²

BC = √(37² - 12²) = 35

Q4

Let the angle is x

cos x = 19/20

x = arccos (19/20)

x = 18.2° (rounded)

Q5

See attached

Added point D and segments AD and DC to help with calculation

BC² = BD² + DC² = (AB + AD)² + DC²

Find the length of added red segments

AD = AC cos 65° = 14 cos 65° = 5.9

DC = AC sin 65° = 14 sin 65° = 12.7

Now we can find the value of BC

BC² = (19 + 5.9)² + 12.7²

BC = √781.3

BC = 28.0 yd

All calculations are rounded

 

6 0
3 years ago
Can someone plz help me dont know the awnser
Bumek [7]
The area of the right triangle = \frac{1}{2}bh

b = base = SV = 12.3
h = hight = HL = 24.6
A = area
\frac{1}{2}bh = A
\frac{1}{2}(12.3)(24.6) = 151.29
4 0
3 years ago
PLEASE HELP THANKS YOU
kondaur [170]
U must find the median, the range, and the mode. And that is your answer
8 0
2 years ago
Read 2 more answers
Other questions:
  • 4/9 of students at a school are boys. If there are 2601 students at the school, how many are girls?​
    8·2 answers
  • Round 2 3 9 7 to the nearst ten
    14·2 answers
  • How many ways can a committee chairman choose 4 people for a subcommittee if there are 12 members on the whole committee?
    7·1 answer
  • A customer bought 7.5 pounds of apples from a local produce market. How many ounces of apples
    7·1 answer
  • 624 divied by 12 divied 4
    5·1 answer
  • Zoe walks 4 kilometers and 600 meters, Elijah runs 3 times as far as Zoe walks. Anthony rides his bike 700 meters farthwr than E
    13·1 answer
  • Lin and diego are discussing two expressions x^2 and 2^x
    12·1 answer
  • What fraction do you get when you divide 5 by 6?
    9·1 answer
  • greg wants to buy a video game.the game is 50% off and the original price is $40.00how much will greg have to pay for this video
    9·1 answer
  • Use the expression 4z + 8 + 3x + b to answer the following
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!