Business Management Filler Notes Draft Assessment

Activity 10.1: Write on your filler notes

The engineering ABC company hypothesized that the mean Brinell hardness of steel to be use in building the new project lounge is greater than 120 thus assigned engineer employees requested one- sample test to be conducted as they set 25 pieces of steel as their sample that resulted to 122.52 with a standard deviation of 8.31. If the engineer set significance level of 0.05, is there sufficient evidence that steel Brinell hardness for their new project is greater than 170? Test the hypothesis using the 5 steps

Activity 10.2: Write on your filler notes

A biologist was interested in determining whether anthurium flower seedlings treated with an extract will result in a standard height of 16 inches of common anthurium flowers. The biologist treated a random sample of 50 seedlings with the extract and subsequently obtained 15.66 inches with a standard deviation of 1.38. Is there sufficient evidence to conclude that the mean height of all such anthurium seedlings is not 16 inches?

Test the hypothesis using 90%, 95% and 99% confidence level. What significance level to use to prove that anthurium flower seedlings with extract will have an average equivalent to 16 inches?