Statistics,Test I: Chapters 1-4 P6 of 7 6. A researcher needs to estimate the me

Question

Statistics,Test I: Chapters 1-4 P6 of 7 6. A researcher needs to estimate the mean beight of corn in a field containing 10,000 corm plants The corn plants are planted 100 to a row, and there are 100 rowS. The researcher wants to take a sample of 100 corn plant heights (a) (1 point) Describe a method for sampling this popalation that wouald be classified as a convenlence sample. (b) (1 point) Describe a method for sampling this population that would be clasitiod as a simple random sample 7. The weather report for this work week (Monday through Friday) states that the probability of rain is 5% for each day. (a) (1 point) What is the peobability that it will rain at least once this week? (b) (1 point) What is the probability that it won't rain this week? (e) ( point) If you docided not to use an umbrella this woek, would it be unasul for you to get wee? Points earned:- _ / 5 poiata

Explanation / Answer

6 a) if we take all 100 samples from starting row which are near to us that will result in convenience sample

b) we can generate a random number for row and than for column to pick a random sample or we can radomely pick a corn plant from eaach row randomely whcih will result in a random sample,

7)

a)

probability that it will rain at least won't rain) =1-(1-0.05)5 =1-0.7738 =0.2262

b) P(it won't rain) =(1-0.05)5 = 0.7738

c)No as probability of getting wet at least once during the week is 0.2262 whcih is higher than 0.05 probability of unusual event therefore it is not unusual

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