If a sample of size 22 has a mean of 15 and another sample of size 18 has
a mean of 20 , find the mean of the combined sample.
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Answer:
The sampling distributions are:
n = 1:
x−−P(x−−)00.510.5
n = 5:
x−−P(x−−)00.030.20.160.40.310.60.310.80.1610.03
n = 10:
x−−P(x−−)00.000.10.010.20.040.30.120.40.210.50.250.60.210.70.120.80.040.90.0110.00
n = 20:
x−−P(x−−)00.000.050.000.100.000.150.000.200.000.250.010.300.040.350.070.400.120.450.160.500.18
x−−P(x−−)0.550.160.600.120.650.070.700.040.750.010.800.000.850.000.900.000.950.0010.00
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The mean of combined data is 69/4. Mark brainliest plis
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