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
antoniya [11.8K]
2 years ago
13

Need help with this please

Mathematics
1 answer:
lana [24]2 years ago
4 0

Answer:n

geadeeeeeeeeeee

Step-by-step explanation:

You might be interested in
Some friends played a board game. During the game, one unlucky player had to move back 8 spaces
podryga [215]
Yes 4+*2 34^%7 shehshshs
6 0
3 years ago
A survey of 90 men found that an average amount spent on St. Patrick's day of $55 with a standard deviation of $18. A similar su
dem82 [27]

Answer:

The value of the test statistic is 4.70.

Step-by-step explanation:

The hypothesis for this test can be defined as follows:

<em>H</em>₀: Men do not spend more than women on St. Patrick's day, i.e. μ₁ = μ₂.

<em>H</em>ₐ: Men spend more than women on St. Patrick's day, i.e. μ₁ > μ₂.

The population standard deviations are not known.

So a <em>t</em>-distribution will be used to perform the test.

The test statistic for the test of difference between mean is:

t=\frac{\bar x_{1}-\bar x_{2}}{\sqrt{\frac{s^{2}_{1}}{n_{1}}+\frac{s^{2}_{2}}{n_{2}}} }

Given:

\bar x_{1}=55\\s_{1}=18\\n_{1}=90\\\bar x_{1}=44\\s_{1}=16\\n_{1}=86

Compute the value of the test statistic as follows:

t=\frac{\bar x_{1}-\bar x_{2}}{\sqrt{\frac{s^{2}_{1}}{n_{1}}+\frac{s^{2}_{2}}{n_{2}}} }=\frac{55-44}{\sqrt{\frac{15^{2}}{90}+\frac{16^{2}}{86} }}=4.70

Thus, the value of the test statistic is 4.70.

7 0
3 years ago
I REALLY need help with this! Could someone please help me?
denis23 [38]

Answer:

It's the first option

Step-by-step explanation:

The Midsegment Theorem states that the segment connecting the midpoints of two sides of a triangle (in this case AB and  AC) is parallel to the third side (BC) and half as long.

4 0
3 years ago
Help pls i need i got 2 mins
serious [3.7K]

Answer:

The new position of the bird is 1 ft below surface of pond.

Step-by-step explanation:

- Position of water bird after 15ft dive:

11-15= -4ft

- Position of water after rising 3 feet:

-4+3= -1ft

Therefor it id 1ft below the surface of the pond

6 0
3 years ago
Read 2 more answers
Three girls are selling cases of popcorn to earn money for a band trip in their first week Emily sold 2 3/4 cases Brenda sold 4
ss7ja [257]
They have sold ten full cases
but have sold 10 and a half cases in total
8 0
3 years ago
Other questions:
  • What is this (x+3)(x+5) help really stuck
    15·1 answer
  • What is 42 of 100 equivalent to
    9·1 answer
  • Plz solve I’ve been stuck on how to start it and I just can’t
    12·2 answers
  • The selling price, s, of an item is s = c + mc, where c is the cost of the item and m is the percent markup based on cost. What
    13·2 answers
  • A box contains 1.0 red chips, 20.bluechips, and 30 green chips. ll5 chrps are orawn lrom the box, find the probability of drawin
    11·1 answer
  • Write the equation.
    14·2 answers
  • The sum of two numbers is 79,and their difference is 33
    14·1 answer
  • Which of the following is the best estimate of √80?
    15·1 answer
  • hello anyone pls help me I'm so stuck I'm scared pls help me I promise I give many points and I'll give the brainliest:(​
    6·2 answers
  • ( BRAINLIEST QUEATION)<br> Find the HCF and LCM of 72 and 56
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!