Bernard and Adriana grew sunflowers in their backyard. Bernard's sunflower grew 4.23 centimeters in one week and 8.91 centimeter
s the second week. Adriana's sunflower grew 15.12 centimeters in two weeks. Over two weeks, how much more did Adriana's sunflower grow than Bernard's? 1.98 cm 4.68 cm 6.21 cm 10.89 cm
1 answer:
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Answer:
z=3.8196
Step-by-step explanation:
-We notice that this is a normal distribution problem.
-Given the mean is $8500, standard deviation is $1200 , and n=350, the critical z-value using alpha=0.05 is calculated as:
Hence, the test statitic is z=3.8196