answer.
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
anygoal [31]
2 years ago
14

The weights of cans of Ocean brand tuna are supposed to have a net weight of 6 ounces. The manufacturer tells you that the net w

eight is actually a Normal random variable with a mean of 5.95 ounces and a standard deviation of 0.2 ounces. Suppose that you draw a random sample of 42 cans.Part i) Suppose the number of cans drawn is doubled. How will the standard deviation of sample mean weight change? A. It will decrease by a factor of 2?. B. It will increase by a factor of 2?. C. It will decrease by a factor of 2. D. It will increase by a factor of 2. E. It will remain unchanged. Part ii) Suppose the number of cans drawn is doubled. How will the mean of the sample mean weight change? A. It will increase by a factor of 2?. B. It will decrease by a factor of 2?. C. It will increase by a factor of 2. D. It will decrease by a factor of 2. E. It will remain unchanged. Part iii) Consider the statement: 'The distribution of the mean weight of the sampled cans of Ocean brand tuna is Normal.' A. It is an incorrect statement. The distribution of the mean weight of the sample is not Normal. B. It is a correct statement, but it is not a result of the Central Limit Theorem. C. It is a correct statement, and it is a result of the Central Limit Theor
Mathematics
1 answer:
Arada [10]2 years ago
8 0

Answer:4

Step-by-step explanation:i cant rlly explain

You might be interested in
Eliza's backpack weighs 18 and StartFraction 7 over 9 EndFraction pounds with her math book in it. Without her math book, her ba
kati45 [8]

Answer:

Math\ Book = 3\frac{65}{72}\ kg

Step-by-step explanation:

Given

<em />Backpack = 18\frac{7}{9}kg<em> --- with math book</em>

<em />Backpack = 14\frac{7}{8}kg<em> --- without math book</em>

<em />

Required

Determine the weight of her math book

To do this, we simply calculate the difference in the weights given.

Math Book= Backpack(with math book) - Backpack (without math book)

Math\ Book = 18\frac{7}{9} - 14\frac{7}{8}

Math\ Book = \frac{169}{9} - \frac{119}{8}

Take LCM

Math\ Book = \frac{8 * 169 - 9 * 119}{72}

Math\ Book = \frac{1352 - 1071}{72}

Math\ Book = \frac{281}{72}

Math\ Book = 3\frac{65}{72}\ kg

7 0
2 years ago
Owen is making lemonade from concentrate. The number of quarts of water he needs is 4 times the number of quarts of concentrate.
tiny-mole [99]

Answer:

<u>The system of equation that models the situation is:</u>

<u>w = 4c</u>

<u>w + c = 100</u>

<u>And c = 20 quarts, 4c = 80 quarts and w = 80 quarts.</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the problem correctly:

Owen wants to make 100 quarts of lemonade

Number of quarts of water 4 times the number of quarts of concentrate

2. Which of the following systems of equations models this situation?

c =  number of quarts of concentrate

w = number of quarts of water

Like the alternatives of systems of equations that model the situation were not given, let's write them by ourselves, this way:

w = 4c (Number of quarts of water 4 times the number of quarts of concentrate)

w + c = 100 (Owen wants to make 100 quarts of lemonade)

Now, let's solve for c and w, this way:

w = 100 - c

Substituting w in the first equation, we have:

100 - c = 4c

100 = 5c

c = 20 ⇒ 4c = 20 * 4 = 80

w = 4 * 20

w = 80

<u>The system of equation that models the situation is:</u>

<u>w = 4c</u>

<u>w + c = 100</u>

<u>And c = 20 quarts, 4c = 80 quarts and w = 80 quarts.</u>

4 0
2 years ago
There is an integer n such that 2n2 − 5n + 2 is prime. To prove the statement it suffices to find a value of n such that (n, 2n2
fomenos

Answer:

n = 0 or 3

Step-by-step explanation:

2n² - 5n + 2

2n² - 4n - n + 2

2n(n - 2) -1(n - 2)

(n - 2)(2n - 1)

Prime number is one which is divisible by itself and 1

n-2 = 1 n = 3

2n-1 = 1 n = 0

7 0
2 years ago
Ardi and lei are both travelling by train. Ardi’s train travels 70km in 35 minutes. Lei’s train travels 585km. It leaves at 9:05
LuckyWell [14K]

Answer:47.14km/h

Step-by-step explanation:

585÷3 and 1/2=167.14km/h

70÷35/60=120km/h

167.14-120=47.14km/h

8 0
2 years ago
The data represents the body mass index​ (BMI) values for 20 females. Construct a frequency distribution beginning with a lower
Papessa [141]

Answer:

Given:

Body mass index values:

17.7

29.4

19.2

27.5

33.5

25.6

22.1

44.9

26.5

18.3

22.4

32.4

24.9

28.6

37.7

26.1

21.8

21.2

30.7

21.4

Constructing a frequency distribution beginning with a lower class limit of 15.0 and use a class width of 6.0.

we have:

Body Mass Index____ Frequency

15.0 - 20.9__________3( values of 17.7, 18.3, & 19.2 are within this range)

21.0 to 26.9__________8 values are within this range)

27.0 - 32.9____________ 5 values

33.0 - 38.9____________ 2 values

39.0 - 44.9 _____________2 values

The frequency distribution is not a normal distribution. Here, although the frequencies start from the lowest,  increases afterwards and then a decrease is recorded again, it is not normally distributed because it is not symmetric.

3 0
2 years ago
Other questions:
  • gina is making a square tablecloth. what is the least number of inches of trim gina will need to go all the way around the edge
    13·1 answer
  • two computers can print out a task in 26 minutes and 78 minutes, respectively. How long will it take to complete the task with b
    15·1 answer
  • Yolanda wanted to see if there was a connection between red hair and green eyes. She observed people walking past her on the str
    8·2 answers
  • Which is equivalent toStartRoot 10 EndRoot Superscript three-fourths x ?
    14·2 answers
  • If the probabilities that an automobile mechanic will service 3, 4, 5, 6, 7, or 8 or more cars on any given workday are, respect
    12·1 answer
  • A pizza is cut into six unequal slices (each cut starts at the center). The largest slice measures $90$ degrees: [asy] unitsize(
    5·1 answer
  • Three friends are playing catch. Zoe is in a straight path 12 feet to the west of alex. Jin is in a straight path 9feet to the n
    13·1 answer
  • Pablo generates the function f (x) = three-halves (five-halves) Superscript x minus 1 to determine the xth number in a sequence.
    12·1 answer
  • Mr.wilkins deposited $2,500 in a new account at his bank . •the bank pays 6.5% interest compounded annually on this account •mr.
    15·1 answer
  • PLSS HELPPP 20 POINTS
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!