Based on the table shown here, what can you say
about immigration between 1820 and 1850?
It decreased before it increased.
It increased and then decreased.
It decreased slowly, then rapidly.
It increased slowly, then rapidly.
Immigrants
becoming
residents
8,385
1820
1830
23,322
DONE
1840
84,066
1850
369,980

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: