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
Ket [755]
2 years ago
6

400 UCF students were randomly selected and asked if they preferred washing their hands with soap and water or using hand saniti

zer. 102 said they prefer to use hand sanitizer. 400 USF students were randomly selected and asked the same question. 112 said they prefer to use hand sanitizer. You want to examine the difference in the proportion of all UCF (1) and USF (2) students who prefer to use hand sanitizer.
1. Which test should be used to determine if a difference exists between the proportion of all UCF and USF students who prefer to use hand sanitizer?
a. z test for means t test for means.
b. z test for proportions paired.
c. z test for means.
d. paired t test for means.
2. Which alternative hypothesis should be used to determine if a difference exists between the proportion of all UCF and USF students who prefer to use hand sanitizer?
A. HA : mu1 - mu2 < 0.
B. HA : mu1 - mu2 is not equal to 0.
C. HA : mu1 - mu2 > 0.
D. HA : p1 - p2 < 0.
E. HA : p1 -p2 > 0.
Mathematics
1 answer:
kirill [66]2 years ago
6 0

Answer:

1. a. z test for means and t test for means.

2. C. HA : mu1 - mu2 > 0

Step-by-step explanation:

Hypothesis testing is used in a situation where there are more than 1 alternative available. The t test is conducted in the mean which determines the t value and then this value is compared with p value to identify the situation whether to accept or reject the null hypothesis. The alternative hypothesis in this situation is is represented by mu.

You might be interested in
How do I solve this problem correctly?
Nat2105 [25]
What is the question for the problem are you trying to figure out area or perhaps perimeter and of what the shaded or non shaded next time include that in your answer.
5 0
3 years ago
A member was charged 260$usd and then applied for financial aid and received a 30% discount . They reach out and ask for the 30%
sergiy2304 [10]

Answer:

The total charge with the discount is $182

The refund is $78

Step-by-step explanation:

Given data

Charge= $260

Discount=30%

Let us find the amount of the 30%

=30/100*260

=0.3*260

=$78

The new charge after the discount is

=260-78

=$182

The total charge with the discount is $182

The refund is $78

5 0
3 years ago
Can Ray CD be called DC also
Nuetrik [128]
Yes it can your correct
5 0
3 years ago
Read 2 more answers
Makayla and Caroline go to the movie theater and purchase refreshments for their friends. Makayla spends a total of $49.00 on 9
gizmo_the_mogwai [7]

Answer:

Let the cost of each popcorn bag be x and cost of each  drink be y

Cost of 9 bags of Popcorn= 9 x

Cost of 8 drinks be = 8 y

Total money spent by Makayla = $ 49

According to Question

9 x + 8 y= 49..................... equation (1)

Similarly , cost of 3 popcorn = 3 x

Cost of 3 drinks= 3 y

Total money spent by Caroline= $ 17.25

According to Question

3 x+ 3 y= $ 17.25...................equation(2)

We can solve above equation by using elimination method

Multiply equation (2) by 3

9 x + 9 y =  51.75..................equation(3)

9 x + 8 y= 49..................... equation (1)

Subtraction equation (1 ) from equation(3)

y = 2.75

put value of y  in any equation (2)

we get

3 x + 3 × 2.75 = 17.25

3 x +   8.25 = 17.25

3 x = 17.25 - 8.25

3 x = 9

x = 3

Hence, cost of each popcorn bag $ 3 cost of each popcorn bag is also $ 3 (approx)

5 0
3 years ago
5 divided by 3 1/3, by lowest point
dem82 [27]

Answer:

1.42

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What label/title would be relevant for this data set:<br><br>33,47,50,52,57,70,81,83,87,97​
    15·1 answer
  • Write the value of the underline digit in 0.496
    8·1 answer
  • Find the value of n such that x2 – 10x + n is a perfect square trinomial.
    6·2 answers
  • Determine whether function whose values are given in the table below could be linear or exponential.
    8·2 answers
  • An auto company claims that the fuel efficiency of its sedan has been substantially improved. A consumer advocate organization w
    9·1 answer
  • five pencils and four pens cost $6.15. three similar pencils and eight owns cost $9.85. how much would you expect to pay for a s
    10·1 answer
  • HELP ME I NEED HELP WITH THIS!?!?! I WILL MARK BRAINLIEST!!!
    15·1 answer
  • HELP ASAP
    5·1 answer
  • There are 17 girls and 13 boys in a school club. What is the percent of the members are girls?
    6·1 answer
  • What is the value
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!