Hi can you help me with these? Your help is highly appreciated.

For Numbers 38 to 43 Case No. 2 Hydrangea is a flower that changes its color according the the pH of the soil. The flower becomes blue when the pH of the soil is too acidic (pH below 5.5}, red when the pH of the soil is too basic (pH above 6.5), and purple when the pH of the soil is exactly between 5.5 to 6.5. A landowner claims that the average pH of their soil can produce perfectly consistent purple flowers with a standard deviation pH of at most 0.5. If the standard deviation of the pH level of the soil exceeds 0.5, the flower would either become blue or red. Use a: 0.05 to determine whether you would support the landowner about the claim or not. The table below shows the pH level of 15 soil samples collected