a. Find the mean and the standard deviation for the numbers of girls in groups of 24 births. The value of the mean is muequals enter your response here. (Type an integer or a decimal. Do not round.) Part 2 The value of the standard deviation is sigmaequals enter your response here. (Round to one decimal place as needed.) Part 3 b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. Values of enter your response here girls or fewer are significantly low. (Round to one decimal place as needed.) Part 4 Values of enter your response here girls or greater are significantly high. (Round to one decimal place as needed.) Part 5 c. Is the result of 22 girls a result that is significantly high? What does it suggest about the effectiveness of the method? The result is not is significantly high, because 22 girls is less than greater than equal to enter your response here girls. A result of 22 girls would suggest that the method is effective. is not effective. (Round to one decimal place as needed.)