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dimulka [17.4K]
3 years ago
12

In a standard normal distribution 95% of the data is within +/- _______standard deviations of the mean.

Mathematics
2 answers:
raketka [301]3 years ago
8 0
Your answer is 2 okay
dybincka [34]3 years ago
6 0

Answer:

2

Step-by-step explanation:

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Lilly is a pizza driver. Lilly has to make 4 deliveries.
Veronika [31]

Answer:

23 min 30 sec

Step-by-step explanation:

First, you add 35 + 14 + 18 + 27 which is 94.
Next, you divide 94 by the number of deliveries there were. Which is 4.
94/4 = 23.5.
So your answer would be 23 minutes and 30 seconds.

I Hope This Helped :D

5 0
1 year ago
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Jaylen bed is 6 feet long and his desk is 3 feet long. he wants to leave a two foot space between his bed and desk. if there is
Montano1993 [528]
No, he would need 132 inches
6 0
2 years ago
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Given that <br> y<br> = 10 cm and <br> θ<br> = 55°, work out <br> x<br> rounded to 1 DP.
ElenaW [278]

Answer:

x=8.2

Step-by-step explanation:

First, figure out which trig function you are going to use.

In this problem you are dealing with the opposite side to the angle and the hypotenuse, and if you remember SOH CAH TOA, this requires sine.

sin (55) =opposite/hypotenuse

sin (55) =x/10

multiply both sides by 10 to get 10 * sin (55) = x

10 * sin (55) = 8.2

5 0
2 years ago
A store donated a percentage of every sale to. The total sales were ​$6.740 so the store donated ​$337. What percent of ​$6,740
Irina-Kira [14]
Answer - 5%

6740=100%
337= x
Criss cross so do 100x337 and then divide by 6740 and you’ll get 5 which you can check by doing 5/100 of 6740
8 0
2 years ago
Experiments on learning in animals sometimes measure how long it takes mice to find their way through a maze. The mean time is 1
Dahasolnce [82]

Answer:

<h3>Option c) H_a:\mu is correct</h3><h3>The alternate hypothesis for the significance test is H_a:\mu</h3>

Step-by-step explanation:

The alternate hypothesis use the sumbol for the population value

Let p be the proportion , Mean be \mu and stadard deviation be \sigma

The null hypothesis states that population value is equal to the value mentioned in the given claim.

H_0:\mu=18 (by given).

The alternate hypothesis for the significance test states that the opposite of the null hypothesis(based on the claim )

∴ H_a:\mu

The symbol "<" because we want to test if the maze is completed faster and thus if the time has decreased.

<h3>∴ option c) H_a:\mu is correct.</h3>
3 0
3 years ago
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