I'm bad at math, so please tutors help me

I. Directions: Use the seven-step method to solve the following: 1. In a plant nursery, the owner thinks that the lengths of seedlings in a box sprayed with a new kind of fertilizer has an average height of 26 cm after three days and a standard deviation of 10 cm. One researcher randomly selected 80 such seedlings and calculated the mean height to be 20 cm and the standard deviation was 10 cm. Will you conduct a one-tailed test or two- tailed test? Proceed with the test using a = 0.15. Step Solution 1. Describe the population parameter gmuzzs orb >b of interest riguons boisl sxia slamse ord al (sting erld 101 2. Formulate the hypotheses: the Sviggs of (T.DD) null hypothesis and the alternative hypothesis Svimobrist 3. Check the assumptions: al sonsofinole 6 920or - is the sample size large enough o belist-owrd Jand ord al for the Central Limit Theorem Sbelist (CLT) to apply? Leaulev Isontha or too - are the sample selected randomly? 4. Choose a significance level for a. - Is the test two-tailed or one- tailed? - Get the critical values for the ofleitede feet ord sdugmoo - test statistic table - Establish the critical regions. 5. Select the appropriate test statistic. - Compute the test statistic slum nolelob srit 91612 .0 6. State the decision rule ord bos idabele Jest art ensgmod 7. Compare the test statistic and the bob orll no bee critical value. - Based on the decision rule, decide whether to reject or to Blues aril Jencrisinl accept Ho. Interpret the result