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
olga_2 [115]
3 years ago
14

In the past, 75% or less of the tourists who visited Tacoma went to see the glass blowing museum. The management of the museum r

ecently undertook an extensive promotional campaign. They are now interested in determining whether the promotional campaign actually increased the proportion of tourists visiting the museum. The correct set of hypotheses is
Mathematics
1 answer:
Alex787 [66]3 years ago
5 0

Answer:

H0 : p ≤ 0.75   against Ha : p > 0.75

Step-by-step explanation:

We formulate our null and alter native hypotheses as

H0 : p ≤ 0.75   against Ha : p > 0.75

In the question the claim whether the promotional campaign actually increased the proportion of tourists visiting the museum is given which is formulated as alternative hypothesis.

So when we formulate the alternative hypothesis as Ha : p> 0.75 the null hypothesis is H0 p ≤ 0.75

Where p is the probability = 75% = 75/100 = 0.75

You might be interested in
Mrs. Grady surveyed 30 students, 12 of which said they liked basketball, 16 of which said they liked hockey, and 4 of which said
diamong [38]
Because 4 people likes both, we take out 4 from the sum of both the number to avoid double count.

People who like both sports = 12 + 16 - 4 = 24
People who do not like either sport = 30 - 24 = 6
4 0
4 years ago
3 + 2y/8 = 1 - y/5<br><br> please answer quick<br> i will give brainliest
TEA [102]

Answer: y = - 40/9

Step-by-step explanation:

3 + 2y / 8 = 1 - y / 5

120 + 10y = 40 - 8y

10y + 8y = 40 - 120

18y = -80

y = -40 /9

5 0
4 years ago
Find the center of mass of the wire that lies along the curve r and has density =4(1 sin4tcos4t)
dolphi86 [110]

The mass of the wire is found to be 40π√2 units.

<h3>How to find the mass?</h3>

To calculate the mass of the wire which runs along the curve r ( t ) with the density function δ=5.

The general formula is,

Mass = \int_a^b \delta\left|r^{\prime}(t)\right| d t

To find, we must differentiate this same given curve r ( t ) with respect to t to estimate |r'(t)|.

The given integration limits in this case are a = 0, b = 2π.

Now, as per the question;

The equation of the curve is given as;

r(t) = (4cost)i + (4sint)j + 4tk

Now, differentiate this same given curve r ( t ) with respect to t.

\begin{aligned}\left|r^{\prime}(t)\right| &=\sqrt{(-4 \sin t)^2+(4 \cos t)^2+4^2} \\&=\sqrt{16 \sin ^2 t+16 \cos ^2 t+16} \\&=\sqrt{16\left(\sin t^2+\cos ^2 t\right)+16}\end{aligned}

Further simplifying;

\begin{aligned}&=\sqrt{16(1)+16} \\&=\sqrt{16+16} \\&=\sqrt{32} \\\left|r^{\prime}(t)\right| &=4 \sqrt{2}\end{aligned}

Now, use integration to find the mass of the wire;

       \begin{aligned}&=\int_a^b \delta\left|r^{\prime}(t)\right| d t \\&=\int_0^{2 \pi} 54 \sqrt{2} d t \\&=20 \sqrt{2} \int_0^{2 \pi} d t \\&=20 \sqrt{2}[t]_0^{2 \pi} \\&=20 \sqrt{2}[2 \pi-0] \\&=40 \pi \sqrt{2}\end{aligned}

Therefore, the mass of the wire is estimated as 40π√2 units.

To know more about density function, here

brainly.com/question/27846146

#SPJ4

The complete question is-

Find the mass of the wire that lies along the curve r and has density δ.

r(t) = (4cost)i + (4sint)j + 4tk, 0≤t≤2π; δ=5

5 0
1 year ago
What is the five non zero multiples of 5
Vinvika [58]
10,15,20,25,30

Is this what you are looking for?
5 0
3 years ago
The mass of a textbook is about 1.75 kilograms. About how many pounds is this?
Daniel [21]
about 3.860 pounds.
6 0
3 years ago
Other questions:
  • List the numbers 56.01 56.011 56.10 from least to gratest
    14·1 answer
  • Jason has 52 toy cars. His friend Jonathan has only 24. How many cars should Jason give to Jonathan so that they have the same n
    14·2 answers
  • The height of a room is 8 feet and 2 inches. If Maria is 64 inches tall, what is the distance from the top of her head to the ce
    10·2 answers
  • Choose the best answer for each question. Which of the underlined words in the sentence below is a singular noun? When the twin
    13·1 answer
  • Use the permutation formula to solve a problem when n = 8 and r = 2.
    10·1 answer
  • Miguel and Jacqui built towers out of craft sticks.Miguel's tower had a 4-inch base.Jaquis tower had a 6-inch base.Miguels tower
    9·1 answer
  • how to know if i have to subtract or add in a point slope form? for example the part where it says (x - 1) how would i know if i
    9·2 answers
  • PLEASE HELP BRANLIEST
    8·1 answer
  • Mrs. Canale’s class is selling frozen pizzas to earn money for a field trip. For every pizza sold, the class makes $5.35. They h
    11·2 answers
  • I need help with this
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!