4 years ago

PLEASE HELP!!!

Mathematics

1 answer:

SVETLANKA909090 [29]4 years ago

5 0

Answer:

h GB tbyfrd6c55xdito

Step-by-step explanation:

d,u ydyd,,fi8z8r,,8tt8z9tzx8g98tt8x8xgxg88txixg8gxx8g8 gg9x 9t 8t89xtx9y9yc9cy8 g g8 g8og cyoycvy g8gviv9y

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HELP PlZ DUE in 30 MIN<br> m∠6 =

MakcuM [25]

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Step-by-step explanation:

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3 years ago

पायप<br> In a school of 300 students, how many would you expect to be left-handed

Debora [2.8K]

150 students. there are two hands. therefore, 50% chance of being left handed, 50% chance of being right handed. 50%= half. half of 300=150. 150 students should be expected to be left-handed.

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3 years ago

A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

Alex_Xolod [135]

Answer:

95% confidence interval for the population mean is 20.255 and 17.945

Step-by-step explanation:

given data

mean = 19.1

standard deviation = 1.5

n = 9

to find out

95% confidence interval for the population mean

solution

we know 95% confidence interval formula i.e.

mean +/- t * standard deviation/ $\sqrt{n}$ .............1

here t for 9 students 2.31 ( from t table)

so put all value n t standard deviation and mean in equation 1

= mean +/- t * standard deviation/ $\sqrt{n}$

= 19.1 +/- 2.31 * 1.5/ $\sqrt{9}$

= 20.255 and 17.945

95% confidence interval for the population mean is 20.255 and 17.945

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3 years ago

Whats the answer to this question

kolbaska11 [484]

Answer is C
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4 years ago

PLzz help I don'y not get it

Alex Ar [27]

Answer:

Step-by-step explanation:

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3 years ago

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