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
lara31 [8.8K]
2 years ago
13

Just question eleven .

Mathematics
1 answer:
gregori [183]2 years ago
7 0
I’m pretty sure a is always and b is sometimes.
You might be interested in
A recent study found that 51 children who watched a commercial for Walker Crisps (potato chips) featuring a long-standing sports
hichkok12 [17]

Answer:

1

The claim is that the mean amount of Walker Crisps eaten was significantly higher for the children who watched the sports celebrity- endorsed Walker Crisps commercial

2

The kind of test to use is a t -test because a t -test is used to check if there is a difference between means of a population

3

t  =  3.054

4

The p-value  is   p-value  =  P(Z >  3.054) = 0.0011291

5

The conclusion is  

There is sufficient evidence to conclude that the mean amount of Walker Crisps eaten was significantly higher for the children who watched the sports celebrity- endorsed Walker Crisps commercial

The test statistics is  

Step-by-step explanation:

From the question we are told that

   The first sample size is  n_1  =  51

    The first sample  mean is \mu_1  =  36

    The second sample size is  n_2  =  41

    The second sample  size is  \mu_2  =  25

     The first standard deviation is  \sigma _1  =  21.4 \  g

    The second standard deviation is  \sigma _2  =  12.8 \  g

  The  level of significance is  \alpha =  0.05

The  null hypothesis is  H_o  :  \mu_1 = \mu_ 2

The  alternative hypothesis is  H_a :  \mu_1 > \mu_2

Generally the test statistics is mathematically represented as

    t  =  \frac{\= x_1 - \= x_2}{ \sqrt{ \frac{s_1^2}{n_1}  + \frac{s_2^2}{n_2}  } }

=>   t  =  \frac{ 36 - 25}{ \sqrt{ \frac{ 21.4^2}{51}  + \frac{ 12.8^2}{41}  } }

=> t  =  3.054

The  p-value is mathematically represented as

     p-value  =  P(Z >  3.054)

Generally from the z table  

             P(Z >  3.054) =  0.0011291

=>   p-value  =  P(Z >  3.054) = 0.0011291

From the values obtained  we see that p-value  < \alpha so  the null hypothesis is rejected

Thus the conclusion is  

  There is sufficient evidence to conclude that the mean amount of Walker Crisps eaten was significantly higher for the children who watched the sports celebrity- endorsed Walker Crisps commercial

5 0
3 years ago
which has the greater volume: Prism with a length of 5 inches, a width of 4 inches, and a height of 10, or a prism with a length
GuDViN [60]
Since you have to multiple. L×W×H....

The first one has a volume of 400 and the second has a volume of 400...so both prisms have an equal volume but have a differnet shape
7 0
2 years ago
Write an equation for the line parallel to the given line that contains C.<br> C(2,8); y = - 4x + 3
Luba_88 [7]

Answer: i love brinly its the best

the value of x is 4, make m||n

Step-by-step explanation:

sorry if this is wrong

3 0
2 years ago
Guys plz help me answer this!!!!
Zolol [24]

Answer:

p= 2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0
3 years ago
Can someone help???​
inn [45]

Answer:

help is for the weak as said my I, the one true burnt chicken nugget

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • If (72)p = 76, what is the value of p?
    5·2 answers
  • Myra owns a car service that charges a $5 flat rate and an additional $0.50 per mile, which is represented by the equation y = 0
    9·2 answers
  • When y varies directly with x, if y = 9 and x = 8 find y when x = 16
    8·1 answer
  • The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of
    11·1 answer
  • (02.06) The table below shows that 1 day equals 24 hours. Notice that 12 hours is one-half of that. Use the table to help you de
    11·1 answer
  • Find three consecutive odd integers such that the sum of the largest and twice the smallest is 25. If x represents the smallest
    10·1 answer
  • At 4:00 am on Christmas Day, 1974 the eye of Cyclone Tracy was directly over Darwin. If Perth time is 1.5 hours behind Darwin ti
    8·1 answer
  • F(x)= x^7+x^6+2x^5+8x^4+2x^3-3 what’s the intervals of inxreasing and decreasing
    8·1 answer
  • Translate the sentence into an equation or formula.
    8·1 answer
  • Determine whether each graph represents a linear or nonlinear function. Use the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!