14. A regression model can be applied to time series data obtain a forecast provided the dependent variable shows:Either an upward or a downward trendAn upward trend but not a downward trendA downward trend but not an upward trendNeither an upward nor a downward trend15.Which distribution is tested to determine the probability that 2 of the 4 engines on a plane fail if failure rate for one engine is 0.01%?Z(normal)TBinomialHypergeometric16. Which distribution is tested to determine the probability of finding exactly 3 males when a sample of 5 students is chosen randomly from the 21 students originally roistered?Z(normal)TBinomialHypergeometric17. IBM wants to introduce a new computer if atleast 20% of the population like it. They sample 1000 people and find 220 like it. What is the appropriate null hypothesis for this test? (round answer 2 decimals and pi equal or greater than the answer)